4,4'-DIMETHYL-1,1'-BI(1,2,3,5-DISELENADIAZOLE)

Authors
BRYAN CD CORDES AW OAKLEY RT SPENCE REVH
Citation
Cd. Bryan et al., 4,4'-DIMETHYL-1,1'-BI(1,2,3,5-DISELENADIAZOLE), Acta crystallographica. Section C, Crystal structure communications, 51, 1995, pp. 2402-2404
Citations number
10
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
51
Year of publication
1995
Part
11
Pages
2402 - 2404
Database
ISI
SICI code
0108-2701(1995)51:<2402:4>2.0.ZU;2-I
Abstract
The radical units Se(2)N(2)CMe dimerize with long Se...Se distances of 3.159 (3) and 3.187 (3) Angstrom to give the title compound, C4H6N4Se 4. There are two crystallographically independent dimers in the unit c ell. The dimers adopt a twisted conformation with parallel ring planes . One ring is rotated on the axis between ring centers by approximatel y 90 degrees from the eclipsed position to give Se-Se-Se-Se torsion an gles of 86.81 (15) and 88.95 (17)degrees. Se-Se bond lengths within th e radicals vary from 2.306 (3) to 2.330 (3) Angstrom.