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Themed collection New Talent: Americas

48 items
Accepted Manuscript - Perspective

What is holding back the development of antiviral metallodrugs? A literature overview and implications for SARS-CoV-2 therapeutics and future viral outbreaks

From the themed collection: New Talent: Americas
Perspective

A bioinorganic chemistry perspective on the roles of metals as drugs and targets against Mycobacterium tuberculosis – a journey of opportunities

Bioinorganic approaches in developing metallodrugs for tuberculosis are discussed, along with our understanding of key metalloproteins with drug target opportunities.

Graphical abstract: A bioinorganic chemistry perspective on the roles of metals as drugs and targets against Mycobacterium tuberculosis – a journey of opportunities
From the themed collection: 2020 Frontier and Perspective articles
Perspective

The chemical and physical properties of tetravalent lanthanides: Pr, Nd, Tb, and Dy

The thermochemistry, descriptive chemistry, spectroscopy, and physical properties of the tetravalent lanthanides (Pr, Nd, Tb and Dy) in extended phases, gas phase, solution, and as isolable molecular complexes are presented.

Graphical abstract: The chemical and physical properties of tetravalent lanthanides: Pr, Nd, Tb, and Dy
From the themed collection: 2020 Frontier and Perspective articles
Communication

Synthesis of atomically precise single-crystalline Ru2-based coordination polymers

Metallopolymerization of kinetically inert Ru2 metallomonomers via construction of Ag–N bonds provides access to atomically precise single-crystalline Ru2-based coordination polymers with varied network topology and primary coordination sphere.

Graphical abstract: Synthesis of atomically precise single-crystalline Ru2-based coordination polymers
From the themed collection: New Talent: Americas
Communication

Squeezing Bi: PNP and P2N3 pincer complexes of bismuth

Stable neutral and highly-reactive cationic Bi complexes featuring NNN and PNP pincer ligands are debuted.

Graphical abstract: Squeezing Bi: PNP and P2N3 pincer complexes of bismuth
From the themed collection: New Talent: Americas
Communication

Systematically altering the lipophilicity of rhenium(I) tricarbonyl anticancer agents to tune the rate at which they induce cell death

Increasing the lipophilicity of rhenium-based anticancer agents increases the rate at which they induce their biological effects.

Graphical abstract: Systematically altering the lipophilicity of rhenium(i) tricarbonyl anticancer agents to tune the rate at which they induce cell death
From the themed collection: New Talent: Americas
Communication

Oxidative addition of activated aryl-carboxylates to Pd(0): divergent reactivity dependant on temperature and structure

Strong C–O bonds in pyrone and coumarin esters can undergo oxidative addition to Pd(0), with the reaction conditions and substrate structure controlling the outcome.

Graphical abstract: Oxidative addition of activated aryl-carboxylates to Pd(0): divergent reactivity dependant on temperature and structure
From the themed collection: New Talent: Americas
Communication

Alkali-metal- and halide-free dinuclear mixed-valent samarium and europium complexes

The synthesis of alkali metal- and halide-free mixed valent dilanthanide complexes supported by a calix[4]pyrrole ligand is described. Bond activation using both a base and one-electron reductant is showcased.

Graphical abstract: Alkali-metal- and halide-free dinuclear mixed-valent samarium and europium complexes
From the themed collection: New Talent: Americas
Communication

Bis(pentafluorophenyl)phenothiazylborane – an intramolecular frustrated Lewis pair catalyst for stannane dehydrocoupling

A Lewis acidic aminoborane (1) was shown to catalytically dehydrocouple stannanes through an unexpected heterolytic frustrated Lewis pair mechanism rather than a homolytic process.

Graphical abstract: Bis(pentafluorophenyl)phenothiazylborane – an intramolecular frustrated Lewis pair catalyst for stannane dehydrocoupling
From the themed collection: New Talent: Americas
Paper

Silver(I) complexes of 3-methoxy-4-hydroxybenzaldehyde thiosemicarbazones and triphenylphosphine: structural, cytotoxicity, and apoptotic studies

Cytotoxic silver(I) complex triggers mitochondrial dysfunction and induces apoptosis in the MDA-MB-231 cells.

Graphical abstract: Silver(i) complexes of 3-methoxy-4-hydroxybenzaldehyde thiosemicarbazones and triphenylphosphine: structural, cytotoxicity, and apoptotic studies
From the themed collection: New Talent: Americas
Paper

Inorganic clusters as metalloligands: ligand effects on the synthesis and properties of ternary nanopropeller clusters

Subtle stereoelectronic changes of the surface capping ligands have long-ranging consequences in the synthesis and chemistry of ternary transition metal selenide clusters.

Graphical abstract: Inorganic clusters as metalloligands: ligand effects on the synthesis and properties of ternary nanopropeller clusters
From the themed collection: New Talent: Americas
Paper

Origin of the 29Si NMR chemical shift in R3Si–X and relationship to the formation of silylium (R3Si+) ions

The origin in deshielding of 29Si NMR chemical shifts in R3Si–X, where X = H, OMe, Cl, OTf, [CH6B11X6], toluene, and OX (OX = surface oxygen), as well as iPr3Si+ and Mes3Si+ were studied using DFT methods.

Graphical abstract: Origin of the 29Si NMR chemical shift in R3Si–X and relationship to the formation of silylium (R3Si+) ions
From the themed collection: New Talent: Americas
Paper

Anticancer and antitrypanosomal activities of trinuclear ruthenium compounds with orthometalated phenazine ligands

Four metalo-intercalators ([Ru33-O)(μ2-OAc)5(L)(py)2]PF6, L = phenazines) present high DNA intercalation constants and high HSA affinity. They are active against melanoma cancer and T. Cruzi parasite.

Graphical abstract: Anticancer and antitrypanosomal activities of trinuclear ruthenium compounds with orthometalated phenazine ligands
From the themed collection: New Talent: Americas
Paper

Mononuclear lanthanide(III)-oxamate complexes as new photoluminescent field-induced single-molecule magnets: solid-state photophysical and magnetic properties

Lanthanide(III)-oxamate complexes can switch into Light Conversion Molecular Devices (LCMDs) or field-induced Single-Molecule Magnets (SMMs) depending on the external stimulus.

Graphical abstract: Mononuclear lanthanide(iii)-oxamate complexes as new photoluminescent field-induced single-molecule magnets: solid-state photophysical and magnetic properties
From the themed collection: New Talent: Americas
Paper

Responsive fluorinated nanoemulsions for 19F magnetic resonance detection of cellular hypoxia

A highly fluorinated Cu2+ complex for 19F MR sensing of cellular hypoxia as nanoemulsion formulations.

Graphical abstract: Responsive fluorinated nanoemulsions for 19F magnetic resonance detection of cellular hypoxia
From the themed collection: New Talent: Americas
Paper

Investigation of cobalt(III)–phenylalanine complexes for hypoxia-activated drug delivery

L-Phenylalanine (L-Phe) was used as a ligand model for the anticancer drug melphalan. CoIII–Phe complexes were successfully designed for hypoxia-selective release of L-Phe from CoIII–Phe upon Co3+/Co2+ reduction by ascorbic acid.

Graphical abstract: Investigation of cobalt(iii)–phenylalanine complexes for hypoxia-activated drug delivery
From the themed collection: New Talent: Americas
Paper

Robust Mn(III) N-pyridylporphyrin-based biomimetic catalysts for hydrocarbon oxidations: heterogenization on non-functionalized silica gel versus chloropropyl-functionalized silica gel

Simple neutral and cationic Mn porphyrins were immobilized on ordinary chromatographic silica or chloropropyl-functionalized silica supports to yield efficient and reusable biomimetic catalysts for C–H activation and oxyfunctionalization of alkanes.

Graphical abstract: Robust Mn(iii) N-pyridylporphyrin-based biomimetic catalysts for hydrocarbon oxidations: heterogenization on non-functionalized silica gel versus chloropropyl-functionalized silica gel
From the themed collection: New Talent: Americas
Paper

A novel green approach based on ZnO nanoparticles and polysaccharides for photocatalytic performance

Novel green photocatalysts based on ZnO in the presence of arabic gum (AGZ) or karaya gum (KGZ) were synthesized by a sol–gel method for photocatalytic performance.

Graphical abstract: A novel green approach based on ZnO nanoparticles and polysaccharides for photocatalytic performance
From the themed collection: New Talent: Americas
Paper

Abnormal co-doping effect on the red persistent luminescence SrS:Eu2+,RE3+ materials

Rapidly prepared SrS:Eu2+,RE3+ exhibits long red persistent luminescence independent of the rare earth co-dopant due to a high Schottky defect concentration.

Graphical abstract: Abnormal co-doping effect on the red persistent luminescence SrS:Eu2+,RE3+ materials
From the themed collection: New Talent: Americas
Paper

EXAFS investigations of temperature-dependent structure in cobalt-59 molecular NMR thermometers

EXAFS spectroscopy was used to study the temperature-dependent molecular structures of a series of cobalt-59 NMR thermometers.

Graphical abstract: EXAFS investigations of temperature-dependent structure in cobalt-59 molecular NMR thermometers
From the themed collection: New Talent: Americas
Paper

Transmembrane Cu(I) P-type ATPase pumps are electrogenic uniporters

Real-time transport analyses define transmembrane Cu(I)-pumps as electrogenic uniporters.

Graphical abstract: Transmembrane Cu(i) P-type ATPase pumps are electrogenic uniporters
From the themed collection: New Talent: Americas
Paper

Spectroscopic characterization of a new Re(I) tricarbonyl complex with a thiosemicarbazone derivative: towards sensing and electrocatalytic applications

A novel Re(I) complex with a thiosemicarbazone derivative is described and fully characterized. Its was further explored as CO2 reduction electrocatalyst, being the first complex with a thiosemicarbazone derivative applied to this goal.

Graphical abstract: Spectroscopic characterization of a new Re(i) tricarbonyl complex with a thiosemicarbazone derivative: towards sensing and electrocatalytic applications
From the themed collection: New Talent: Americas
Paper

Spin-frustration with two quasi-degenerated spin states of a copper(II) heptanuclear complex obtained from an amino acid ligand

A Cu(II) heptanuclear complex, Cu7atac, synthesized from an amino acid ligand showed to be an antiferromagnetic spin-frustrated bis-triangular system. Cu7atac might be a promising qubit candidate for quantum information storage.

Graphical abstract: Spin-frustration with two quasi-degenerated spin states of a copper(ii) heptanuclear complex obtained from an amino acid ligand
From the themed collection: New Talent: Americas
Paper

Heterometallic trinuclear oxo-centered clusters as single-source precursors for synthesis of stoichiometric monodisperse transition metal ferrite nanocrystals

Solvothermal reactions of MIIFe2III3-O)(μ2-O2CR)6(H2O)3 (R = CF3, M = Fe, Co, Ni, Cu, Zn) clusters produce monodisperse, phase-pure MFe2O4 nanocrystals.

Graphical abstract: Heterometallic trinuclear oxo-centered clusters as single-source precursors for synthesis of stoichiometric monodisperse transition metal ferrite nanocrystals
From the themed collection: New Talent: Americas
Paper

Novel syntheses of carbazole-3,6-dicarboxylate ligands and their utilization for porous coordination cages

A benzyl-protecting strategy affords access to large quantities of carbazole-based ligands or molecular adsorbents with tunable inter-cage interactions.

Graphical abstract: Novel syntheses of carbazole-3,6-dicarboxylate ligands and their utilization for porous coordination cages
From the themed collection: New Talent: Americas
Paper

Determining the coordination environment and electronic structure of polymer-encapsulated cobalt phthalocyanine under electrocatalytic CO2 reduction conditions using in situ X-Ray absorption spectroscopy

In situ X-ray absorbance spectroscopy measurements show that encapsulating cobalt phthalocyanine within coordinating polymers leads to axial ligation of Co and results in enhanced rates for electrocatalytic CO2 reduction.

Graphical abstract: Determining the coordination environment and electronic structure of polymer-encapsulated cobalt phthalocyanine under electrocatalytic CO2 reduction conditions using in situ X-Ray absorption spectroscopy
From the themed collection: New Talent: Americas
Paper

The leaving group in Au(I)–phosphine compounds dictates cytotoxic pathways in CEM leukemia cells and reactivity towards a Cys2His2 model zinc finger

The leaving group L in [(R3P)AuL]n+ regulates the cytotoxic mechanism against CEM leukemia cells and the reactivity towards Sp1 ZnF3.

Graphical abstract: The leaving group in Au(i)–phosphine compounds dictates cytotoxic pathways in CEM leukemia cells and reactivity towards a Cys2His2 model zinc finger
From the themed collection: New Talent: Americas
Paper

Platinum complexes of a boron-rich diphosphine ligand

Herein, we describe the preparation, characterization, and reactivity of two PtII bis-hydrocarbyl complexes containing the 1,2-bis(di(3-dicyclohexylboraneyl)propylphosphino)ethane (P2BCy4) ligand.

Graphical abstract: Platinum complexes of a boron-rich diphosphine ligand
From the themed collection: New Talent: Americas
Paper

Sulfur transfer reactions of a zinc tetrasulfanido complex

The sulfur transfer reactions of a zinc tetrasulfanido complex are explored and contrasted with those of metal polysulfidos.

Graphical abstract: Sulfur transfer reactions of a zinc tetrasulfanido complex
From the themed collection: New Talent: Americas
Paper

Photoinduced electron transfer dynamics of AuNPs and Au@PdNPs supported on graphene oxide probed by dark-field hyperspectral microscopy

The time scale for interfacial photoinduced electron transfer (PeT) in plasmonic nanoparticles is not well established and the details are still under debate.

Graphical abstract: Photoinduced electron transfer dynamics of AuNPs and Au@PdNPs supported on graphene oxide probed by dark-field hyperspectral microscopy
From the themed collection: New Talent: Americas
Paper

Photophysical, photodynamical, redox properties and BSA interactions of novel isomeric tetracationic peripheral palladium(II)-bipyridyl porphyrins

Exploring photophysical/ROS species of Pd(II)-porphyrins.

Graphical abstract: Photophysical, photodynamical, redox properties and BSA interactions of novel isomeric tetracationic peripheral palladium(ii)-bipyridyl porphyrins
From the themed collection: New Talent: Americas
Paper

Synthesis, characterization, and electrochemical properties of a first-row metal phthalocyanine series

A first-row metal phthalocyanine series is synthesized and the effects of axial metal-ligand substitution is investigated electrochemically and in the context of charge carriers for redox-flow batteries.

Graphical abstract: Synthesis, characterization, and electrochemical properties of a first-row metal phthalocyanine series
From the themed collection: New Talent: Americas
Paper

X1INH, an improved next-generation affinity-optimized hydrazonic ligand, attenuates abnormal copper(I)/copper(II)-α-Syn interactions and affects protein aggregation in a cellular model of synucleinopathy

By tuning the copper(I)/copper(II) affinity of a novel N-acylhydrazone, a more soluble, hydrolysis resistant and less toxic improved Metal–Protein Attenuating Compound for the bioinorganic management of metal-enhanced aggregopathies was obtained.

Graphical abstract: X1INH, an improved next-generation affinity-optimized hydrazonic ligand, attenuates abnormal copper(i)/copper(ii)-α-Syn interactions and affects protein aggregation in a cellular model of synucleinopathy
From the themed collection: New Talent: Americas
Paper

A molecular boron cluster-based chromophore with dual emission

Bromination of the luminescent borane, anti-B18H22, via electrophilic substitution using AlCl3 and Br2, yields the monosubstituted derivative 4-Br-anti-B18H21 as an air-stable crystalline solid.

Graphical abstract: A molecular boron cluster-based chromophore with dual emission
From the themed collection: New Talent: Americas
Paper

Rapid mechanochemical synthesis of metal–organic frameworks using exogenous organic base

We describe the mechanochemical, solvent-free synthesis of metal–organic frameworks using liquid organic base for the first time.

Graphical abstract: Rapid mechanochemical synthesis of metal–organic frameworks using exogenous organic base
From the themed collection: New Talent: Americas
Paper

Self-assembled gold nanoparticles and amphiphile peptides: a colorimetric probe for copper(II) ion detection

We show that arginine/phenylalanine based peptides can be used to control the aggregation of gold nanoparticles in different ways. The arrangement provides a colorimetric approach to detect Cu2+ ions in water.

Graphical abstract: Self-assembled gold nanoparticles and amphiphile peptides: a colorimetric probe for copper(ii) ion detection
From the themed collection: New Talent: Americas
Paper

A hemilabile manganese(I)–phenol complex and its coordination induced O–H bond weakening

Synthesis and characterization of [(HPO)(PO)Mn(CO)2 (H1), a phenol bound first-row transition metal complex, is reported. Thermochemical analysis of H1 indicated the presence of coordination induced O–H bond weakening.

Graphical abstract: A hemilabile manganese(i)–phenol complex and its coordination induced O–H bond weakening
From the themed collection: New Talent: Americas
Paper

Water dispersible ligand-free rare earth fluoride nanoparticles: water transfer versus NaREF4-to-REF3 phase transformation

Crystalline phase and rare-earth (RE) ion choice were identified as key parameters for NaREF4-to-REF3 phase transformation versus water transfer during ligand removal from small NaREF4 nanoparticles at low pH.

Graphical abstract: Water dispersible ligand-free rare earth fluoride nanoparticles: water transfer versus NaREF4-to-REF3 phase transformation
From the themed collection: New Talent: Americas
Paper

Ru(II)-Naphthoquinone complexes with high selectivity for triple-negative breast cancer

Ru(II)/lapachol complex shows significant selectivity for triple negative breast cancer (TNBC) compared to the non-tumor human breast epithelial cell line.

Graphical abstract: Ru(ii)-Naphthoquinone complexes with high selectivity for triple-negative breast cancer
From the themed collection: New Talent: Americas
Paper

Site-selective halogenation of mixed-valent vanadium oxide clusters

Here, we expand on the synthesis and characterization of chloride-functionalized polyoxovanadate-alkoxide (POV-alkoxide) clusters, to include the halogenation of mixed-valent vanadium oxide assemblies.

Graphical abstract: Site-selective halogenation of mixed-valent vanadium oxide clusters
From the themed collection: New Talent: Americas
Paper

Identification of key functionalization species in the Cp*Ir(III)-catalyzed-ortho halogenation of benzamides

Cp*Ir(III) complexes have been shown to be effective for the halogenation of N,N-diisopropylbenzamides with N-halosuccinimide as a suitable halogen source.

Graphical abstract: Identification of key functionalization species in the Cp*Ir(iii)-catalyzed-ortho halogenation of benzamides
From the themed collection: New Talent: Americas
Paper

Zn-Templated synthesis of substituted (2,6-diimine)pyridine proligands and evaluation of their iron complexes as anolytes for flow battery applications

Zn2+ templating enables synthesis of redox ‘non-innocent’ diimine pyridine ligands with strong electron-withdrawing groups, allowing construction of iron complexes with multiple ligand-based reductions for application in redox flow batteries.

Graphical abstract: Zn-Templated synthesis of substituted (2,6-diimine)pyridine proligands and evaluation of their iron complexes as anolytes for flow battery applications
From the themed collection: New Talent: Americas
Paper

Understanding the photophysical properties of rhenium(I) compounds coordinated to 4,7-diamine-1,10-phenanthroline: synthetic, luminescence and biological studies

The photophysical properties of fac-[Re(L)(Am2phen)(CO)3]0/+ provided new insights into excited-state deactivation through an unusual inversion between two MLCT excited states.

Graphical abstract: Understanding the photophysical properties of rhenium(i) compounds coordinated to 4,7-diamine-1,10-phenanthroline: synthetic, luminescence and biological studies
From the themed collection: New Talent: Americas
Paper

Evaluation of cobalt complexes with tripod ligands for zinc finger targeting

We report the ability of CoII and CoIII complexes of tri(2-pyridylmethyl)amine and N,N-di(2-pyridylmethyl)glycinate to disrupt zinc fingers.

Graphical abstract: Evaluation of cobalt complexes with tripod ligands for zinc finger targeting
From the themed collection: New Talent: Americas
Paper

Azo-triazolide bis-cyclometalated Ir(III) complexes via cyclization of 3-cyanodiarylformazanate ligands

Sterically encumbered iridium-bound formazanate ligands undergo redox-neutral cyclization to form azo-triazolides, a new class of redox-active chelating ligand.

Graphical abstract: Azo-triazolide bis-cyclometalated Ir(iii) complexes via cyclization of 3-cyanodiarylformazanate ligands
From the themed collection: New Talent: Americas
Paper

Tunable carbocation-based redox active ambiphilic ligands: synthesis, coordination and characterization

Synthesis of carbenium-based ligands that are ambiphilic, redox active, and easily tunable along with their coordination to Co(II) and Ni(II).

Graphical abstract: Tunable carbocation-based redox active ambiphilic ligands: synthesis, coordination and characterization
From the themed collection: New Talent: Americas
Paper

Reductive halocyclosilazane polymerization

The synthesis and polymerization of a chloroformed-functionalized six-membered cyclosilazane (Si5N) is reported.

Graphical abstract: Reductive halocyclosilazane polymerization
From the themed collection: New Talent: Americas
Paper

Altering the optoelectronic properties of boron difluoride formazanate dyes via conjugation with platinum(II)-acetylides

The absorption, emission, and electrochemical properties of conjugates of boron difluoride formazanate dyes and Pt(II)-acetylides are systematically studied.

Graphical abstract: Altering the optoelectronic properties of boron difluoride formazanate dyes via conjugation with platinum(ii)-acetylides
From the themed collection: New Talent: Americas
48 items

About this collection

This themed issue aims to reflect the strength and vitality of inorganic chemistry in the Americas and is guest-edited by Professors Georgii Nikonov (Brock University, Canada), Neal Mankad (University of Illinois at Chicago, USA), and Ana Maria da Costa Ferreira (University of São Paulo, Brazil). Emerging new talent from across the Americas is showcased from a broad spectrum of inorganic chemistry and highlights new perspectives on the subject.

Spotlight

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