Partial Hydrogen Bonds: Structural Studies on Thioureidoalkylphosphonates
- 1 March 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry A
- Vol. 109 (12) , 2942-2947
- https://doi.org/10.1021/jp045469l
Abstract
X-ray crystal and molecular structures of the following compounds are investigated: diphenyl 1-(3-phenylthioureido)propylphosphonate (I), diphenyl 1-(3-phenylthioureido)methylthio-propylphosphonate (II), and diphenyl [2-methyl-1-(3-methylthioureido)propyl]phosphonate (III). Additionally single point density functional theory calculations at the B3LYP/6-311+G(d) level of theory are performed on dimers whose geometries are taken from the crystal structures. The additional diffuse and polarization components are included on H-atoms which participate in H-bonds. The obtained wave functions are applied later to study theoretical electron densities for these species. Bond critical points are determined for dimers investigated to characterize the nature of interactions, especially bifurcated acceptor hydrogen bonds. The characteristics of bond critical points are investigated in terms of the electron densities and their Laplacians.This publication has 43 references indexed in Scilit:
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