Intra- and inter-molecular carboranyl C–H⋯N hydrogen bonds in pyridyl-containing ortho-carboranesElectronic supplementary information (ESI) available: rotatable 3-D molecular structure diagrams of experimental structures of 1–4 and of MP2/6-31G* optimised geometries 1a–7b in CHIME format. Computed GIAO NMR data for 1b–4c. See http://www.rsc.org/suppdata/dt/b2/b209931d/

2002 ◽  
pp. 475-482 ◽  
Author(s):  
Elena S. Alekseyeva ◽  
Andrei S. Batsanov ◽  
Lynn A. Boyd ◽  
Mark A. Fox ◽  
Thomas G. Hibbert ◽  
...  
1986 ◽  
Vol 64 (1) ◽  
pp. 142-147 ◽  
Author(s):  
Suzanne Deguire ◽  
François Brisse ◽  
Jacques Ouellet ◽  
Rodrigue Savoie

A stoichiometric complex of formula (COOH)2•2H2O•18-crown-6 has been obtained from oxalic acid and the macrocyclic polyether 18-crown-6. The crystals of the complex have a monoclinic unit cell and belong to the P21/c space group. The components in the adduct are linked through hydrogen bonds in a polymer-like fashion: -crown–H2O–HOOCCOOH–OH2–crown–, where the oxalic acid molecules are present in two distinct disordered orientations. The infrared and Raman spectra of the complex are also reported and interpreted.


2011 ◽  
Vol 34 (5-6) ◽  
pp. 127-130 ◽  
Author(s):  
Yaya Sow ◽  
Libasse Diop ◽  
Kieran C. Molloy ◽  
Gabrielle Kociok-Köhn

Abstract The title compounds [R2NH2][C2O4SnMe3](R=i-Bu, Cy), in which tin atoms adopt a distorted trigonal bipyramidal configuration, have been prepared and submitted to an X-ray diffraction study. These compounds have been obtained from the reaction of (Cy2NH2)2C2O4·H2O or (i-Bu2NH2)2C2O4 with SnMe3Cl. In both [R2NH2][C2O4SnMe3] compounds, the trans complex has an almost regular trigonal bipyramidal geometry around the tin atom. The SnMe3 residues are connected as a chain with bridging oxalate anions in a trans-SnC3O2 framework, the oxygen atoms being in axial positions. The cations connect linear adjacent chains through NH…O hydrogen bonds giving layered structures.


2007 ◽  
Vol 63 (3) ◽  
pp. o1521-o1522
Author(s):  
P. Sakthivel ◽  
K. Sethusankar ◽  
P. Jai Sankar ◽  
P. S. Joseph

The phenyl ring in the title compound, C15H11Br2NO2S, makes a dihedral angle of 81.8 (1)° with the mean plane of the indole system. The molecular structure is stabilized by C—H...O hydrogen bonds.


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