The compound [Cr-2(mu(2)-CH3COO)(6)(mu(3)-O)(H2O)(3)]DHB . 2H(2)O (DHB = 2,6-dihydroxybenzoate(-1)), as characterized by single crystal X-ray analysis and spectroscopy, is described. The compound crystallizes in the monoclinic space group Cc with a = 14.122(3), b = 15.137(4), c = 14.952(3) Angstrom, beta = 99.70(3)degrees, Z = 4. The structure of the complex consists of the trimetallic cage common to 'basic' acetates of Cr(III), Fe(III) and Rh(III), where three metal ions lie at the comers of a nearly equilateral triangle of side similar to 3.3 Angstrom, the center being occupied by a triply-bridging oxygen. The chromium coordination is compared with those found in related complexes. The DHB anion is anchored to the trichromium moiety through bonding between the carboxylate group and a metal-bound water molecule.
Crystal structure of mu(3)-oxo-esakis(mu(2)-acetate)triaquatrichromium(III) 2,6-dihydroxybenzoate dihydrate / Glowiak, T; Kozlowski, H; Erre, Ls; Micera, Giovanni. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 248:1(1996), pp. 99-102. [10.1016/0020-1693(95)04990-8]
Crystal structure of mu(3)-oxo-esakis(mu(2)-acetate)triaquatrichromium(III) 2,6-dihydroxybenzoate dihydrate
MICERA, Giovanni
1996-01-01
Abstract
The compound [Cr-2(mu(2)-CH3COO)(6)(mu(3)-O)(H2O)(3)]DHB . 2H(2)O (DHB = 2,6-dihydroxybenzoate(-1)), as characterized by single crystal X-ray analysis and spectroscopy, is described. The compound crystallizes in the monoclinic space group Cc with a = 14.122(3), b = 15.137(4), c = 14.952(3) Angstrom, beta = 99.70(3)degrees, Z = 4. The structure of the complex consists of the trimetallic cage common to 'basic' acetates of Cr(III), Fe(III) and Rh(III), where three metal ions lie at the comers of a nearly equilateral triangle of side similar to 3.3 Angstrom, the center being occupied by a triply-bridging oxygen. The chromium coordination is compared with those found in related complexes. The DHB anion is anchored to the trichromium moiety through bonding between the carboxylate group and a metal-bound water molecule.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
