title: catena-Poly[[tetra-kis(μ(2)-acetato-κO:O')dicopper(II)(Cu-Cu)]-μ(2)-acetato-κO:O'-[bis-[μ(2)-3-(dimethyl-amino)propan-1-olato]-κN,O:O;κO:N,O-bis-[(tetra-hydro-furan-κO)copper(II)]]-μ(2)-acetato-κO: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).
authors.forename: Muhammad
authors.initials: M
authors.lastname: Shahid
authors.forename: Muhammad
authors.initials: M
authors.lastname: Mazhar
authors.forename: Madeleine
authors.initials: M
authors.lastname: Helliwell
authors.forename: Javeed
authors.initials: J
authors.lastname: Akhtar
authors.forename: Kibriya
authors.initials: K
authors.lastname: Ahmad