The Conformation of Sterically Congested Seven-Membered Rings Containing Tetracoordinate Germanium(IV): A First X-Ray Crystallographic Structure Determination

Authors: Pastor, Stephen¹; Rahni, David¹; Khoury, Nancy¹; Koch, Stephen²

Source: Phosphorus, Sulfur, and Silicon and the Related Elements, Volume 181, Number 8, August 2006 , pp. 1951-1956(6)

Publisher: Taylor and Francis Ltd

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Abstract:

The X-ray crystallographic analysis of 6,6-dimethyl-2,4,8,10-tetra-tert-octyl-dibenzo[ d,f ][1,3,2]dioxagermepin, 1 is reported. In the solid-state conformation of 1, the dihedral angle about the C─C sp 2 - sp 2 σ bond connecting the two aryl rings is 50.1°. The observed C 2 symmetry in the solid-state conformation of 1 is consistent with the previously suggested solution conformation.

Keywords: Conformational analysis; dibenzo[ d , f ][1,3,2]dioxagermepin; germanium; seven-membered rings; solid-state conformation; x-ray crystal structure

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10426500500544139

Affiliations: 1: Department of Chemistry, Pace University, Pleasantville, New York 2: Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York

Publication date: 2006-08-01