Da. Friesen et al., TO(1,4,8,11-TETRAAZACYCLOTETRADECANE)CHROMIUM(III) AND TO(1,4,8,11-TETRAAZACYCLOTETRADECANE)CHROMIUM(III) PERCHLORATE, Acta crystallographica. Section C, Crystal structure communications, 53, 1997, pp. 687-691
The cis isomer of the title compound, [Cr(NCS)(2)(C10H24N4)](ClO4), is
a racemate of the Bosnich type V structure; the trans complex is a me
so substance with a Bosnich type III stereochemistry. There is no appr
eciable change in the structures of the title compound on cooling, eve
n though there are marked color changes. The Cr-N bond lengths are all
in the range 1.983 (2)-1.998 (4) Angstrom for the bonds to the isothi
ocyanate groups and in the range 2.046 (2)-2.088 (3) Angstrom for the
bonds to cyclam N atoms.