Themed collection Nitrogen Ligands

This special web collection of Dalton Transactions focuses on nitrogen ligands, as a tribute to the 150^th anniversary of the development of the periodic table.

This review focuses on the recent developments made in the fabrication of N-doped carbon materials for enhanced CO₂ conversion and electrochemical reduction into high-value-added products.

2,2′-Dipyridylamine derivatives: Discreet members of the polydentate nitrogen ligand familly with underestimated potential.

Tris(pyrazolyl)methane ligands (Tpm^x) have been for years a step behind their highly popular boron-anionic analogues, the tris(pyrazolyl)borate ligands (Tp^x).

In the present Perspective article, synthetic and structural aspects, reactivity studies and applications of platinum group metal complexes containing guanidinate ligands are discussed.

Redox-active unsaturated chelate ligands can be realised with different ring sizes of the resulting metallacycles.

In the present perspective, the recent advances of α-diimine nickel based catalysts of ethylene polymerization, focusing on the relationships between catalyst structures and their catalytic properties are discussed.

During the past three decades, considerable research effort has been dedicated to a new class of organic ligands – cyanoximes – which have the general formula NC–C(NOH)-R, where R is an electron-withdrawing group. In total, 44 different cyanoximes were prepared and characterized thus far.

Phosphorus dendrimers (dendrimers having one phosphorus atom at each branching point) possess versatile properties, depending on the type of their terminal functions.

Rare examples of stable heterobimetallic Ca/Li and Ba/Li amido polymeric species, as well as an ate Ca/Li diphenylmethanide compound stable in ethers, have been structurally characterised. Intra- and intermolecular metal⋯H–Si interactions are shown to play a key role.

Molybdenum triiodide complexes bearing phenyl and ferrocenyl substituted PNP-type pincer ligands acted as more effective catalysts toward ammonia production under ambient reaction conditions.

New ruthenium complexes based on click-synthesized triazole-containing NNN ligands were successfully used for the hydrogenation of aldehydes and ketones.

The introduction of β-ethynyl groups strongly influences the optical properties of silver 3,17- triarylcorrole complexes.

Three new polynuclear Cu(II) complexes derived from the new aroylhydrazone N′-(di(pyridin-2-yl)methylene)pyrazine-2-carbohydrazide (HL) have been screened towards the oxidation of xylene isomers.

Porous organic polymers (POPs) functionalized by cobalt corroles are designed for selective carbon monoxide capture applications.

A series of novel silver polypyridine complexes containing PTA or PTAS have been synthesized and fully characterized. Representative light-stable and water-soluble complexes were evaluated for their cytotoxic and the antitumor activity.

Trapped ion mobility mass spectrometry shows its power as analytical tool in supramolecular chemistry by discriminating ten heteroleptic coordination cage derivatives, only differing slightly in size.

Boosting iron(II) complex excited-state lifetime by combining pyrazine and benzimidazolylidene NHC ligands.

Reactions of bis[5-(2-pyridyl)-1,2,4-triazol-3-yl]alkanes (alkane spacers –(CH₂)_n–: n = 2 in L2, n = 3 in L3, −n = 4 in L4) with Ni, Co, Fe salts resulted in the preparation of five series of mononuclear and binuclear complexes.

A highly stabilizing Cu(II)-mediated base pair is introduced into DNA using a large artificial nucleobase.

Experimental and theoretical studies of a new strontium metallacrown reveal the specific central ion influence on molecular and electronic structures of metallamacrocycles.

Coupling of nickel complexes containing N,N′-disubstituted-2,3-dimethyl-1,4-diazabutadiene-1,3 occurs through the methyl group of the latter in nonpolar media in the presence of free o-quinone.

Study on the synthesis, characterization, photoluminescence and anti-tumor activity of a series of zinc(II) halogen substituted terpyridine complexes.

The copper(II) complexes with latonduine derivatives are superior to those with isomeric paullone modified ligands.

Energy transfer studies were performed on a series of new pyrene–metalloporphyrin (Zn, Cu, Mg and Mn) dendritic constructs.

Two barium-amide complexes bearing crown-ether-functionalised amidinate and iminoanilide ligands that act as competent precatalysts for the intermolecular hydrophosphination of vinylarenes are presented.

Within heterodinuclear Ln(III) complexes, the chirality of the diaminocyclohexane fragment dictates the helicity of the chiral hexaazamacrocycle which is in turn transferred into the helicity of the achiral hexaazamacrocyle.

We explore the impact of methylthiazolylcarboxylate pendant arms on the endo-or exo-cyclic coordination of Cu(II) with tacn derivatives.

Fe(III)-Aminobisphenolate hydroxyquinoline complexes are active anticancer drug candidates in the low micromolar range, displaying apoptosis as the mode of cell death.

Two-dimensional homochiral coordination polymers of sodium, silver, copper and zinc were obtained with 2alkyl,2-(1H-imidazol-1-yl)acetate anions as bridging ligands.

A 1 : 1 mixture of two self-complementary tweezers incorporating different spacers led to a narcissistic self-sorting process under thermodynamic control.

Long-ranged lamellar assembly structures and metalation-related electronic properties of truxene–porphyrin compounds were studied by the STM/STS technique.

The flexible, activated MOF rtl-[Cu(HIsa-az-dmpz)] undergoes a reversible phase change into a closed form with gate opening at cryogenic temperatures for N₂ and CO₂.

Two similar amidinate samarium catalysts were synthesized in order to investigate the difference between a monometallic and a bimetallic system in the catalytic hydroamination cyclization reaction.

Zinc aryloxides supported by phenylphenolato ligands were used for the development of active antifungal biodegradable materials via ring-opening polymerization of L-lactide.

Linear polyethylene waxes with vinyl content can be generated using the depicted N,N,N′-Co catalyst at an industrially relevant operating temperature of 70 °C.

Silver(I) pyrazolate adducts with phenanthroline, neocuproine and bathocuproine exhibit phosphorescence in the solid state. Their photophysical behavior was interpreted using TD-DFT calculations.

Both ion size and electronic structure of Ln(II/III) ion are decisive in the implementation of either κ¹-amido : η⁶-arene or κ²-N,N′ type of coordination of sterically demanding amidinate ligands.

These complexes crystallize as the less common axial isomer and reach EC₅₀ < 1.8 μM against HeLa cell lines.

We report the synthesis, characterization and catalytic activity of a new phthalocyanine coordination polymer (Cu₄CuPcSPy).

Stereo-control and effects on the catalytic activity of oxidorhenium(V) complexes in epoxidation and perchlorate reduction catalysis.

Potassium complexes containing 2-(t-butyliminomethyl)pyrrole and 2-(t-butylaminomethyl)pyrrole revealed intriguing bonding modes, respectively, which proved to be an effective class of catalysts for cyclotrimerization of isocyanate under mild conditions.

Hydrophobicity may increase the hydrolytic stability of vanadium(V) catecholate complexes enabling rapid cellular uptake of the intact complex exhibiting potent anti-cancer activity.

The preparation and reactivity of an imidazolin-2-iminato ruthenium complex with a rare one-legged piano-stool (“pogo stick”) geometry is reported.

Particles with different sizes promote spin crossover at 220 K and a 10 K hysteresis.

High molecular weight plastomeric polyethylene can be generated using the title N,N′ nickel(II) halide precatalysts activated with either MAO or EASC; notably these catalysts operate effectively at an industrially relevant 80 °C.