Catena-Poly[[tetra-kis(?(2)-acetato-?O:O')dicopper(II)(Cu-Cu)]-?(2)-acetato-?O:O'-[bis-[?(2)-3-(dimethyl-amino)propan-1-olato]-?N,O:O;?O:N,O-bis-[(tetra-hydro-furan-?O)copper(II)]]-?(2)-acetato-?O:O'].

ABSTRACT: The title complex, [Cu(4)(C(5)H(12)NO)(2)(C(2)H(3)O(2))(6)(C(4)H(8)O)(2)](n), consists of dinuclear [Cu(2)(C(5)H(12)NO)(2)(THF)(2)] (THF is tetra-hydro-furan) and [Cu(2)(CH(3)COO)(4)] units linked through acetate ions, generating parallel one-dimensional polymeric chains propagating in the [10] direction. In the first dinuclear unit, Cu(II) ions related by inversion symmetry are bridged by two 3-(dimethyl-amino)propan-1-olate ligands. Likewise, a pair of inversion-related Cu(II) ions are bridged by four acetate groups. The crystallographically independent Cu centers are linked to one another by a single bridging acetate group, generating an infinite chain. The distorted square-pyramidal coordination of the first metal center is completed with an apical THF mol-ecule, with a long Cu-O bond length of 2.476?(5)?Å. The geometry around the other metal atom is close to octa-hedral, and the Cu?Cu separation in this unit is 2.652?(1)?Å. The distance between the metal centers in the first dinuclear unit is considerably longer [3.068?(1)?Å], suggesting little or no bonding inter-action. The Cu?Cu separation between two acetate-bridged independent Cu centers is 4.860?(2)?Å. The THF mol-ecule has methyl-ene groups disordered over two positions, with occupancies of 0.608?(13) and 0.392?(13).

SUBMITTER: Shahid M 

PROVIDER: S-EPMC2960524 | biostudies-literature | 2008 Aug

REPOSITORIES: biostudies-literature