Assembly of novel phenanthroline-based cobalt(II) coordination polymers by selecting dicarboxylate ligands with different spacer length: From 1-D chain to 3-D interpenetrated framework

作者：Wang Xiu Li^*; Chen Yong Qiang; Liu Guo Cheng; Lin Hong Yan; Zheng Wen Yan; Zhang Jin Xia

来源：Journal of Organometallic Chemistry, 2009, 694(14): 2263-2269.

DOI：10.1016/j.jorganchem.2009.03.008

• Coordination polymers
• Assembly
• Dicarboxylate ligands
• Cobalt
• Topology

Three novel Co(II) coordination polymers [Co(Dpq)(2)(1,4-NDC)(0.5)] center dot (1,4-HNDC) (1), [Co(Dpq)(2,6-NDC)] (2), and [Co(2)(Dpq)(2)(BPEA)(4)(H(2)O)] center dot H(2)O (3) have been obtained from hydrothermal reaction of cobalt nitrate with the mixed ligands dipyrido[3,2-d:2',3'-f]quinoxaline (Dpq) and three dicarboxylate ligands with different spacer length [1,4-naphthalene-dicarboxylic acid (1,4-H(2)NDC), 2,6-naphthalene-dicarboxylic acid (2,6-H(2)NDC) and biphenylethene-4,4'-dicarboxylic acid (BPEA)]. All these complexes are fully structurally characterized by elemental analysis, IR, and single-crystal X-ray diffraction analysis. Single-crystal X-ray analysis reveal that complex 1 is infinite one-dimensional (1-D) chains bridged by 1,4-NDC ligands, which are extended into a two-dimensional (2-D) supramolecular network by pi-pi interactions between the Dpq molecules. Complex 2 is a distorted three-dimensional (3-D) PtS network constructed from infinite Co-O-C rod units. Complex 3 has a 5-fold interpenetrated 3-D structure with diamondoid topology based on dinuclear [Co(2)(CO(2))(2)(mu(2)-OH(2))N(4)O(2)] units and BPEA molecules. The different structures of complexes 1-3 illustrate the influence of the length of dicarboxylate ligands on the self-assembly of polymeric coordination architectures. In addition, the thermal properties of complexes 1-3 and fluorescent properties of complexes 2 and 3 have been investigated in the solid state.

• 出版日期2009-6-15
• 单位渤海大学