Synthesis, Crystal and Molecular Structures of [Co(MH)2(Thio)2][BF4] · H2O and [Co(DH)2(NH3)2][BF4]
摘要:
Crystal structures of [Co(MH)(2)(Thio)(2)][BF4] (.) H2O (I) and [Co(DH)(2)(NH3)(2)][BF4] (II), where MH- is H3C-C(NOH)-C(NO-)-H and DH- is H3C-C(NOH)-C(NO-)-CH3, were determined by X-ray diffraction. The crystals are monoclinic, space group C2/c, unit cell parameters (for I and II, respectively): a = 22.018(2) Angstrom, b = 7.943(1) Angstrom, c = 11.681(1) Angstrom, beta = 92.68(1) and a = 21.436(2) Angstrom, b = 6.400(2) Angstrom, c = 12.389(2) Angstrom, beta = 113.13(1)degrees. In both cases, the Co(III) coordination polyhedron is a centrosymmetrical trans-octahedron, N4S2 for I and N-6 for II. In the crystals of I and II, the complex cations and the outer-sphere [BF4](-) anions (and the crystal water molecules in I) form elaborate hydrogen bonding system.