scholarly journals Impacts of hydrogen bonding interactions with Np(v/vi)O2Cl4 complexes: vibrational spectroscopy, redox behavior, and computational analysis

2020 ◽  
Vol 49 (20) ◽  
pp. 6854-6866 ◽  
Author(s):  
Mikaela M. Pyrch ◽  
Jennifer L. Bjorklund ◽  
James M. Williams ◽  
Daniel L. Parr IV ◽  
Sara E. Mason ◽  
...  

Crystallization of neptunyl(v) tetrachlorides over neptunyl(vi) species occurs simultaneously with charge assisted hydrogen bonding in our solid state materials, which we explored by DFT calculations, cyclic voltammograms, and Raman spectroscopy.

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3370 ◽  
Author(s):  
Tiddo J. Mooibroek

A systematic evaluation of the CSD and the PDB in conjunction with DFT calculations reveal that non-covalent Carbon-bonding interactions with X–CH3 can be weakly directional in the solid state (P ≤ 1.5) when X = N or O. This is comparable to very weak CH hydrogen bonding interactions and is in line with the weak interaction energies calculated (≤ –1.5 kcal·mol−1) of typical charge neutral adducts such as [Me3N-CH3···OH2] (2a). The interaction energy is enhanced to ≤–5 kcal·mol−1 when X is more electron withdrawing such as in [O2N-CH3··O=Cdme] (20b) and to ≤18 kcal·mol−1 in cationic species like [Me3O+-CH3···OH2]+ (8a).


RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 4789-4796 ◽  
Author(s):  
Snehasish Thakur ◽  
Michael G. B. Drew ◽  
Antonio Franconetti ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay

Four vanadyl Schiff base complexes have been prepared and characterized. Energies of supramolecular interactions in complexes 1, 2 and 3 were estimated using DFT calculations, and further corroborated with NCI plot index computational tool.


2019 ◽  
Vol 234 (2) ◽  
pp. 119-128 ◽  
Author(s):  
José Antônio do Nascimento Neto ◽  
Cameron Capeletti da Silva ◽  
Leandro Ribeiro ◽  
Ana Karoline Silva Mendanha Valdo ◽  
Felipe Terra Martins

Abstract The delicate balance among conformation, coordination bonds and hydrogen bonding has been probed in solvatomorphs of known metal-organic molecules synthesised from copper(II), cadmium(II) and cobalt(II) with acetate (OAc) and 2,2′-bipyridine (bipy). The Cu(OAc)2(bipy) complex, isolated as a pentahydrate, has the acetate ligands oriented to opposite sides of the coordination square plane. DFT calculations show the energy difference between this structure and a syn form amount to approximately 16 kJ/mol. The presence of lattice water enables the formation of O–H···O hydrogen bonds with the acetate ligands. Different coordination numbers and energies are found as a function of the number of water molecules co-crystallising in the Cd(OAc)2(bipy)(OH2)·3H2O and [Co(OAc)(bipy)2](OAc)·3H2O complexes.


CrystEngComm ◽  
2020 ◽  
Vol 22 (5) ◽  
pp. 888-894 ◽  
Author(s):  
Ashkan Kianimehr ◽  
Kamran Akhbari ◽  
Jonathan White ◽  
Anukorn Phuruangrat

Two new Na and K coordination polymers with halogen bond, metallophilic and hydrogen bonding interactions were synthesized. These two compounds were synthesized sonochemically and solid-state conversions of them to each other were investigated.


CrystEngComm ◽  
2018 ◽  
Vol 20 (45) ◽  
pp. 7281-7292 ◽  
Author(s):  
Kousik Ghosh ◽  
Klaus Harms ◽  
Antonio Bauzá ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay

Supramolecular interactions in the solid state structures of a mixed valence cobalt(ii/iii) complex and a cobalt(iii) complex have been studied using DFT calculations.


Toxins ◽  
2011 ◽  
Vol 3 (10) ◽  
pp. 1310-1331 ◽  
Author(s):  
Praveen Chaudhary ◽  
Roxanne A. Shank ◽  
Tony Montina ◽  
James T. Goettel ◽  
Nora A. Foroud ◽  
...  

2013 ◽  
Vol 2013 (13) ◽  
pp. 2350-2361 ◽  
Author(s):  
Nicolas Bibent ◽  
Thibault Charpentier ◽  
Sabine Devautour-Vinot ◽  
Ahmad Mehdi ◽  
Philippe Gaveau ◽  
...  

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