Shahid Muhammad, Mazhar Muhammad, Helliwell Madeleine, Akhtar Javeed, Ahmad Kibriya
Acta Crystallogr Sect E Struct Rep Online. 2008 Aug 9;64(Pt 9):m1139-40. doi: 10.1107/S1600536808024148.
The title complex, Cu(4)(C(5)H(12)NO)(2)(C(2)H(3)O(2))(6)(C(4)H(8)O)(2), 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).
标题配合物Cu(4)(C(5)H(12)NO)(2)(C(2)H(3)O(2))(6)(C(4)H(8)O)(2)由双核[Cu(2)(C(5)H(12)NO)(2)(THF)(2)]（THF为四氢呋喃）和[Cu(2)(CH(3)COO)(4)]单元通过乙酸根离子相连组成，形成了沿[10]方向延伸的平行一维聚合物链。在第一个双核单元中，通过反演对称相关的Cu(II)离子由两个3-(二甲基氨基)丙醇配体桥连。同样，一对通过反演相关的Cu(II)离子由四个乙酸根基团桥连。晶体学独立的Cu中心通过一个单一的桥连乙酸根基团相互连接，形成一条无限长的链。第一个金属中心扭曲的四方锥配位由一个顶端的THF分子完成，Cu - O键长为2.476 (5) Å，较长。另一个金属原子周围的几何形状接近八面体，该单元中Cu⋯Cu间距为2.652 (1) Å。第一个双核单元中金属中心之间的距离长得多[3.068 (1) Å]，表明几乎没有键合相互作用。两个由乙酸根桥连的独立Cu中心之间的Cu⋯Cu间距为4.860 (2) Å。THF分子的亚甲基在两个位置上无序，占有率分别为0.608 (13)和0.392 (13)。
