Study of the aqueous reactions of metallic ions with benzenetetracarboxylate ions
作者:Fernande D Rochon、Gassan Massarweh
DOI:10.1016/s0020-1693(01)00307-3
日期:2001.3
The reactions of barium 1,2,4,5-benzenetetracarboxylate with CoSO4 produced the dinuclear species Co(H2O)(5)(mu -C6H2(COO)(4))Co(H2O)(5) which was characterized by crystallographic methods. The results have shown that the compound belongs to the monoclinic C2/c space group and it crystallized with six molecules of water in the lattice. The crystal is stabilized by a very elaborate H-bonded 3D network. The molecule contains an inversion center. The average Co-OH2 distance is 2.0710(8) Angstrom and the sixth Co-O bond is 2.0356(7) Angstrom. The reaction of MnCl2 with benzenetetracarboxylate ions produced a similar dinuclear species, Mn(H2O)(5)(mu -C6H2(COO)(4))Mn(H2O)(5).H2O (2). The crystallographic results have shown that there are two independent molecules, which each contains an inversion center. This compound crystallized with only one molecule of water, and again the H-bonding system is very elaborate. The aqueous reaction of K2Mn(C6H2(COO)(4)). 3H(2)O with CoSO4 produced a compound containing two dinuclear species Mn(H2O)(5)(mu -C6H2(COO)(4))Mn(H2O)(5)} Co(H2O)(5)(mu -C6H2(COO)(4))Co(H2O)(5)}. 2H(2)O, which was characterized by X-ray diffraction methods. The results have shown that the latter compound is isomorphous with the Mn(II) compound. One of the Mn(II) dimer in 2 has been replaced by a Co(II) dimer. (C) 2001 Elsevier Science B.V. All rights reserved.