SYNTHESIS AND CRYSTAL-STRUCTURE OF MANGAN ESE-CONTAINING PYROBORATES - MNCO(B2O5) AND MNMG(B2O5)

Authors
UTZOLINO A BLUHM K
Citation
A. Utzolino et K. Bluhm, SYNTHESIS AND CRYSTAL-STRUCTURE OF MANGAN ESE-CONTAINING PYROBORATES - MNCO(B2O5) AND MNMG(B2O5), Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 51(7), 1996, pp. 912-916
Citations number
33
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
51
Issue
7
Year of publication
1996
Pages
912 - 916
Database
ISI
SICI code
0932-0776(1996)51:7<912:SACOME>2.0.ZU;2-U
Abstract
The compounds MnCo(B2O5) (I) and MnMg(O-2(5)) (II) were prepared by us ing B2O3 flux techniques in an argon atmosphere. X-ray investigations on single crystals showed triclinic symmetry, space group C-i(i)-P1, I : a=320.94(10), b=619.20(11), c=939.0(2) pm, a=104.38(2)degrees, beta= 90.76(2)degrees, gamma=92.046(14)degrees and II: a=318.97(7), b=619.8( 2), c=936.7(2) pm, alpha=104.47(2)degrees, beta=90.60(2)degrees, gamma =91.98(2)degrees Z=2. Their structures are isotypic with Co-2(B2O5). A ll metal ions are octahedrally coordinated by six oxygen atoms. The st ructures contain diborate anions B2O54-. Each boron atom is threefold coordinated by oxygen.