Themed collection Structure and dynamics of chemical systems: Honouring N. Sathyamurthy’s 75th birthday

32 items
Review Article

Photoswitchable organic magnetic materials

This review discusses controlling magnetism with molecular spin states using light, which can have a wide range of applications in spintronics, information technology, data storage, and quantum computations.

Graphical abstract: Photoswitchable organic magnetic materials
From the themed collection: 2025 PCCP Reviews
Paper

Hydrogenation of ethylene over molybdenum–sulfur complexes supported on UiO-66

Spin-state crossovers facilitate lower-energy paths, and intermediates show stronger ethylene binding in low-spin states.

Graphical abstract: Hydrogenation of ethylene over molybdenum–sulfur complexes supported on UiO-66
Accepted Manuscript - Paper

Applying R–Matrix Theory to Atom–Molecule Inelastic Collisions: the case study of H2O+H

Accepted Manuscript - Paper

Conformations of Semiflexible Ring Polymers

Open Access Paper

pH-dependent peptide aggregation and translocation across octanol and hexane interfaces: insights from umbrella sampling simulations

pHD24 peptides have an aggregation propensity at lower pH, which led to macromolecular-sized pore formation compared to neutral pH.

Graphical abstract: pH-dependent peptide aggregation and translocation across octanol and hexane interfaces: insights from umbrella sampling simulations
Open Access Paper

A theoretical investigation on the mechanistic and kinetic study of 2,2,3,3,4,4,5,5-octafluorocyclopentanol with OH radicals and Cl atoms and its implications in new particle formation

2,2,3,3,4,4,5,5-Octafluorocyclopentanol compounds are released from industrial locations and react with atmospheric oxidants.

Graphical abstract: A theoretical investigation on the mechanistic and kinetic study of 2,2,3,3,4,4,5,5-octafluorocyclopentanol with OH radicals and Cl atoms and its implications in new particle formation
Paper

Unveiling the effect of thiol functionalization on the photophysical and nonlinear optical properties of higher diamondoids: insights from the DFT approach

The rational control of the optoelectronic and nonlinear optical (NLO) properties of higher diamondoids (HDs) is the focus of the present study, which remains challenging.

Graphical abstract: Unveiling the effect of thiol functionalization on the photophysical and nonlinear optical properties of higher diamondoids: insights from the DFT approach
Paper

Production of ultracold asymmetric tops from Sr atoms and SrOH molecules

A route to the production of ultracold Sr2OH molecules combines interactions, collisions, and STIRAP, creating a strongly polar asymmetric-top species promising for precision measurements.

Graphical abstract: Production of ultracold asymmetric tops from Sr atoms and SrOH molecules
Paper

A study on the spectroscopy of cis- and trans-formic acid upon ionisation

Using post-Hartree–Fock methods and the time-dependent DFT approach, we investigated the electronic states of both cis- and trans-HCOOH+ cations and the electronic ground state of the neutral HCOOH species revealing complex vibronic couplings.

Graphical abstract: A study on the spectroscopy of cis- and trans-formic acid upon ionisation
Paper

Calcium carbides: can hexa-carbides grow unlimitedly? Theoretical perspectives and issues that oppose a definite answer

Quasi-molecule theory and ‘tiles’ embedded on the parent molecules is used to investigate whether calcium hexa-carbides can attain linearity irrespective of their size.

Graphical abstract: Calcium carbides: can hexa-carbides grow unlimitedly? Theoretical perspectives and issues that oppose a definite answer
Accepted Manuscript - Paper

Nonadiabatic electron wavepacket states in excited small carbon clusters

Open Access Paper

Importance of intermolecular –C[triple bond, length as m-dash]C–H⋯X–C (X = F, O, N) and –Y–H⋯F–C (Y = O, N) hydrogen bonds in crystal structures

The importance of intermolecular –C[triple bond, length as m-dash]C–H⋯X–C (X = F, O, N) hydrogen bonds has been established using database analysis using CSD search, gas phase computations, and topological analysis. Such interactions have potential applications in crystal engineering.

Graphical abstract: Importance of intermolecular –C [[triple bond, length as m-dash]] C–H⋯X–C (X = F, O, N) and –Y–H⋯F–C (Y = O, N) hydrogen bonds in crystal structures
Paper

Elucidation of the intrinsic and diffusion-driven electron transfer dynamics in N,N-diarylaminostilbenes: an ultrafast spectroscopic perspective

Decoding ultrafast photoinduced electron transfer landscape in aminostilbene–nitromethane systems reveals intrinsic electron transfer rates competing with solvation and structural relaxation, probed via time-resolved spectroscopic studies.

Graphical abstract: Elucidation of the intrinsic and diffusion-driven electron transfer dynamics in N,N-diarylaminostilbenes: an ultrafast spectroscopic perspective
Paper

Prediction of Henry's law constants for CO2 and CH4 in levulinic acid via different Monte Carlo approaches

Monte Carlo simulation-based prediction of Henry's law constants of CO2 and CH4 in levulinic acid are predicted at 313.15 K and 101.325 kPa.

Graphical abstract: Prediction of Henry's law constants for CO2 and CH4 in levulinic acid via different Monte Carlo approaches
Paper

On the diffusion mechanism of some superalkali metal clusters adsorbed on single-layered boron nitride flakes

Upon getting adsorbed on hexagonal single-layered boron nitride flakes, OLi4, NLi5 and CLimetal clusters exhibit anomalous diffusion.

Graphical abstract: On the diffusion mechanism of some superalkali metal clusters adsorbed on single-layered boron nitride flakes
Paper

Enhancement of complexation due to the effect of a bath: a van der Waals complex in a N2 bath

Chemical dynamics of association and ensuing dissociation of C6H6 and C6F6 is studied in a 1000 N2 bath at two densities. Reaction rates vary by varying bath density due to the change in the impact parameter, energy transfer, and cage effect.

Graphical abstract: Enhancement of complexation due to the effect of a bath: a van der Waals complex in a N2 bath
Paper

Mode-selective H2O dissociation on Pt(111) under two-dimensional confinement

Zero-point corrected barrier reduction under 2D confinement enables ground-state reactivity to reach levels comparable to that of vibrationally excited H2O on bare Pt(111), with graphene showing the strongest effect.

Graphical abstract: Mode-selective H2O dissociation on Pt(111) under two-dimensional confinement
Open Access Paper

Neural network ensemble for computing cross sections of rotational transitions in H2O + H2O collisions

A machine learning tool using an ensemble of neural networks is proposed to predict cross sections of rotational transitions in H2O + H2O collisions. Bottom right image courtesy of NASA/JPL-Caltech/UMD.

Graphical abstract: Neural network ensemble for computing cross sections of rotational transitions in H2O + H2O collisions
Paper

Substituent effects on the supramolecular arrangement in bio-inspired chlorin nanotubes

Chlorosomal light harvesting systems arise from pigment self assembly into ordered chlorin nanotubes, where peripheral substituents define the monomer puzzle piece and thereby determine fit and packing within the aggregate.

Graphical abstract: Substituent effects on the supramolecular arrangement in bio-inspired chlorin nanotubes
Open Access Paper

Vibrational energy landscapes and energy flow in GPCRs: comparison between class A and class B GPCRs using all atom and coarse-grained models

Vibrational energy dynamics and the energy landscape of GLP-1R, a class B GPCR, are computed and analyzed. Important features that control energy flow in GLP-1R are identified and compared with those of a class A GPCR.

Graphical abstract: Vibrational energy landscapes and energy flow in GPCRs: comparison between class A and class B GPCRs using all atom and coarse-grained models
Paper

Are supramolecular synthons stable as discrete units? Results from a series of salts of 4-(4-hydroxyphenylazo)benzoic acid and its derivatives with aminopyridines

Are supramolecular synthons stable as discrete units? Results from a series of salts of 4-(4-hydroxyphenylazo)benzoic acid and its derivatives with aminopyridines.

Graphical abstract: Are supramolecular synthons stable as discrete units? Results from a series of salts of 4-(4-hydroxyphenylazo)benzoic acid and its derivatives with aminopyridines
Paper

The heat distribution of harmonically trapped single particles in active viscoelastic media

Optically trapped nanoparticle in a active viscoelastic medium.

Graphical abstract: The heat distribution of harmonically trapped single particles in active viscoelastic media
Paper

Two-dimensional ring polymer molecular dynamics determination of the MnO+ + H2/D2 reaction rates on a Δ-machine learned potential energy surface

Ring-polymer molecular dynamics rate coefficients for MnO+ + H2 reaction on a Δ-machine learning potential energy surface are in reasonably good agreement with experiment, they also reveal moderate nuclear quantum effects.

Graphical abstract: Two-dimensional ring polymer molecular dynamics determination of the MnO+ + H2/D2 reaction rates on a Δ-machine learned potential energy surface
Paper

Screening of potential candidates for solid electrolyte interphase materials for lithium-ion batteries through a data-driven approach

Material property prediction through machine learning has emerged as a revolutionary approach for diminishing hardships in the design of optimal materials for practical applications.

Graphical abstract: Screening of potential candidates for solid electrolyte interphase materials for lithium-ion batteries through a data-driven approach
Open Access Paper

Quantum dynamics of C10H in the interstellar medium: inelastic collisions with He and formation reaction from the HC10H/H reactants

C10H is the longest ever observed carbon-chain anion in a molecular cloud. It is here investigated to obtain from quantum treatments its rotational inelastic dynamics with He and its formation reaction from H/HC10H as reagents.

Graphical abstract: Quantum dynamics of C10H− in the interstellar medium: inelastic collisions with He and formation reaction from the HC10H/H− reactants
Paper

Unraveling the structural origins of stimulated emission redshift in cyanine dye 1122C: a combined AIMD and machine learning study

1122C undergoes ultrafast transcis photoisomerization, but its excited-state dynamics remain unclear. AIMD reproduces the stimulated emission (SE) spectrum. Using machine learning, we identified structural deformations driving SE redshift.

Graphical abstract: Unraveling the structural origins of stimulated emission redshift in cyanine dye 1122C: a combined AIMD and machine learning study
Paper

The puzzle of high lifetime and low stabilization of HO3˙: rationalization and prediction

A crucial puzzle in atmospheric chemistry is the long lifetime of HO3˙ despite its low stabilization energy. Our calculations suggest that the solution to this puzzle is linked to the non-RRKM effect due to cistrans isomerization.

Graphical abstract: The puzzle of high lifetime and low stabilization of HO3˙: rationalization and prediction
Paper

Mechanistic insights into neosilyllithium-catalyzed hydroboration of nitriles, aldehydes, and esters: a DLPNO-CCSD(T) study

DLPNO-CCSD(T) calculations were performed to unravel the mechanistic insights and the origins of substrate-dependent reactivity of neosilyllithium-catalyzed hydroboration of nitriles, aldehydes, and esters.

Graphical abstract: Mechanistic insights into neosilyllithium-catalyzed hydroboration of nitriles, aldehydes, and esters: a DLPNO-CCSD(T) study
Paper

Unveiling the effect of choline chloride on hydrophobic association of methane

Addition of the choline chloride enhances the hydrophobic association of methane molecules and promotes the formation of compact aggregates compared to the neat water.

Graphical abstract: Unveiling the effect of choline chloride on hydrophobic association of methane
Paper

Optical gaps of F-center defects in LiF using many-body methods

The optical gaps of surface and bulk F-center defects are investigated using an efficient single-pole many-body method. Surface defect exhibits a reduced optical gap versus bulk due to weaker confinement effects and enhanced lattice relaxation.

Graphical abstract: Optical gaps of F-center defects in LiF using many-body methods
Paper

Synergistic cyclic cooperativity governs the strength of chalcogen, pnictogen and tetrel bonds in microhydrated clusters

The synergetic cyclic cooperativity contributions determine the strength of non-covalent bonds in microhydrated clusters of CO2, N2O and SO2.

Graphical abstract: Synergistic cyclic cooperativity governs the strength of chalcogen, pnictogen and tetrel bonds in microhydrated clusters
Paper

Construction of first-principles-based adiabatic and diabatic Hamiltonians for the TiO68− unit of the BaTiO3 crystal: photoemission spectra and ferroelectricity

PJT coupling between the 1A1g and 1T1u states in BaTiO3 through t1u normal modes leads to a symmetry-breaking distortion yielding spontaneous polarization and typical photoemission spectra.

Graphical abstract: Construction of first-principles-based adiabatic and diabatic Hamiltonians for the TiO68− unit of the BaTiO3 crystal: photoemission spectra and ferroelectricity
32 items

About this collection

Professor Narayanasami Sathyamurthy’s influence on theoretical chemistry research in India, particularly in chemical reaction dynamics, is profound and far-reaching. When he joined the Indian Institute of Technology (IIT) Kanpur in 1978, he was the sole researcher in this field in the country. Today, numerous research groups, many led by his former group members or their students, are conducting pioneering work on various aspects of chemical dynamics at top institutions across India. His scientific legacy is both deep and lasting, and he has played a pivotal role in shaping the landscape of theoretical and computational chemistry research in India.

This special collection in PCCP celebrates his distinguished career and showcases research in theoretical and computational chemistry focused on the structure and dynamics of chemical systems. Topics of interest include, but are not limited to:

  • Molecular reaction dynamics (experimental, computational and theoretical work)
  • Computational chemical dynamics
  • Statistical mechanics of condensed matter and biomolecular systems
  • Potential energy surfaces and free energy landscapes
  • Electronic structure theory and computation

Guest Editors:

Ashwani K. Tiwari (IISER Kolkata, India), Balakrishnan Naduvalath (University of Nevada, Las Vegas, USA), R. S. Swathi (IISER Thiruvananthapuram, India), Neelanjana Sengupta (IISER Kolkata, India)

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