Divalent metal succinate 4,4 '-dipyridylamine extended solids: From helical chains to diverse three-dimensional networks featuring double, quadruple, or self-interpenetration

作者：Montney Matthew R; Krishnan Subhashree Mallika; Patel Niral M; Supkowski Ronald M; LaDuca Robert L^*

来源：Crystal Growth & Design, 2007, 7(6): 1145-1153.

DOI：10.1021/cg070008l

Hydrothermal synthesis has afforded a family of five divalent metal succinate (suc) coordination polymers incorporating the kinked dipodal organodiimine 4,4'-dipyridylamine (dpa), which were structurally characterized by single-crystal X-ray diffraction and thermogravimetric analysis. [Co(suc)(dpa)(2)] (1) manifests chiral helical one-dimensional (1-D) chains formed from the linkage of neighboring Co atoms through bischelating bisbridging succinate moieties, with pendant dpa ligands. {[Ni(dpa)(2)(suc)(0.5)]Cl} (2) possesses a rare self-interpenetrated 5-connected cationic framework with a unique 6(10) topology, constructed from the junction of quadruply interpenetrated adamantoid [Ni(dpa)(2)](2n+) networks via bischelating mu(2)-succinate ligands. {[Cu(suc)(dpa)]center dot 0.5H(2)O} (3) exhibits a doubly interpenetrated CdSO4 net (6(5)8 topology) containing both 1-D double braided cationic helical [Cu(dpa)](2+) ribbons and orthogonally situated zigzag [Cu(suc)] chains. The quadruply interpenetrated three-dimensional (3-D) network structure (4(2)6(3)8 topology, SrAl2-type) of {[Zn(suc)(0.5/2)(dpa)]center dot H2O} (4) is built from [Zn(suc)(0.5/2)] chains interlocked with dpa tethers. {[Cd(suc)(dpa)]center dot H2O} (5) displays doubly interpenetrated 6-connected alpha-Po networks based on {Cd2O2} dimers within [Cd(suc)] two-dimensional (2-D) layers, in turn pillared by dpa ligands. The coordination geometry about the metal atoms and the succinate binding modes and conformations in these compounds vary widely, playing a significant role in promoting the diversity of the observed structural motifs. Supramolecular hydrogen-bonding interactions through the dpa amine subunit are evident in all cases.

• 出版日期2007-6