Title : ( Very Strong Centrosymmetric [O...H...O]+ and Asymmetric [O-H…O]+ Hydrogen Bonds In a New POM-Based Hybrid Material )
Authors: Mehrdad Pourayoubi , Ali Reza Mahjoub ,
Full TextAbstract
A specific assembly process, driven by coexisting X-H…O hydrogen bonding and X…O short intermolecular contacts (X = C, N, O) is described, in which the pseudo-Keggin polyoxoanion and two types of molecule...cation pairs (with C1 and Ci symmetries) were assembled to the programmed supramolecular architecture. Cooperation of the positive-charge, resonance effect and the O=C…Oterminal intermolecular contact led to the short and strong symmetrical [O…H…O]+ hydrogen bond (O…O = 2.449(13) Å) in one of the molecule…cation pairs [C4H9NO…H…ONC4H9]+ with the H-bonded proton in the center of inversion. The other [C4H9NOH…ONC4H9]+ molecule…cation pair (non-centrosymmetric) was formed through a very strong asymmetric [O.H.O]+ hydrogen bond of 2.431(13) Å in length which was created via the synergistic effect between the minor N-H…O secondary interaction, +CAHB (positive-charge-assisted hydrogen bond) and RAHB (resonance assisted hydrogen bond) mechanisms.
Keywords
, Strong hydrogen bond, Crystal structure, Organic/inorganic hybrid, Polyoxometalate
@article{paperid:1018549,
author = {Pourayoubi, Mehrdad and Ali Reza Mahjoub},
title = {Very Strong Centrosymmetric [O...H...O]+ and Asymmetric [O-H…O]+ Hydrogen Bonds In a New POM-Based Hybrid Material},
journal = {Journal of the Iranian Chemical Society},
year = {2010},
volume = {7},
number = {4},
month = {December},
issn = {1735-207X},
pages = {864--874},
numpages = {10},
keywords = {Strong hydrogen bond; Crystal structure; Organic/inorganic hybrid; Polyoxometalate},
}
%0 Journal Article
%T Very Strong Centrosymmetric [O...H...O]+ and Asymmetric [O-H…O]+ Hydrogen Bonds In a New POM-Based Hybrid Material
%A Pourayoubi, Mehrdad
%A Ali Reza Mahjoub
%J Journal of the Iranian Chemical Society
%@ 1735-207X
%D 2010
