trans-(DL-isoleucinato-N,O)[tris(2-aminoethyl)amine-kappa N-4]cobalt(III) diperchlorate

Citation
Jw. Cai et al., trans-(DL-isoleucinato-N,O)[tris(2-aminoethyl)amine-kappa N-4]cobalt(III) diperchlorate, ACT CRYST C, 57, 2001, pp. 394-396
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
0108-2701 → ACNP
Volume
57
Year of publication
2001
Part
4
Pages
394 - 396
Database
ISI
SICI code
0108-2701(20010415)57:<394:TND>2.0.ZU;2-8
Abstract
The racemic title compound, trans-[N,N-bis(2-aminoethyl)-1,2-ethanediamine- kappa N-4](DL-isoleucinato-N,O)cobalt(III) diperchlorate, [Co(C6H18N4)(C6H1 2NO2)](ClO4)(2), crystallizes in the enantiomorphous space group P2(1)2(1)2 (1) with Z = 12 (Z' = 3). Each of the three cations in the asymmetric unit represents a different chirality of the isoleucine ligand; two of them are R (or D) and the third is the S (or L) enantiomer. The mixture crystallizes in a so-called unbalanced crystallization, in which the cations adopt a ch iral array of composition RRS or SSR, depending on the crystal selected for data collection.