A > 22 angstrom long metal-complex anion and a 1D cationic coordination polymer, both based on 4,4 '-bipyridine-N,N '-dioxide, yielding a 3D and 2-fold interpenetrated fsc net of the hydrogen-bonded metal-organic 1D polymer

作者：Chamayou Anne Christine; Janiak Christoph^*

来源：Inorganica Chimica Acta, 2010, 363(10): 2193-2200.

DOI：10.1016/j.ica.2010.03.025

• Cobalt
• Coordination polymer
• Complex anion
• 4,4 '-Bipyridine-N,N '-dioxide
• Interpenetration
• fsc net

The cationic one-dimensional (1D) coordination polymer chain (1)(infinity){[Co(mu-bpdo)(H(2)O)(4)](2+)} and the metal-complex anion trans-[Co(SO(4))(2)(bpdo)(2)(H(2)O)(2)](2+), both based on the 4,4'-bipyridine-N,N'-dioxide (bpdo) ligand, form a complementary supramolecular pair (1)(infinity){[Co(mu-bpdo)(H(2)O)(4)](2+)}(n) n[Co(SO(4))(2)(bpdo)(2) (H(2)O)(2)](2+) (1) with respect to charge balance and hydrogen bonding. With a length of >22.14 angstrom along the bpdo-Co-bpdo axis the metal-complex trans-[Co(SO(4))(2)(bpdo)(2)(H(2)O)(2)](2+) is one of the longest and anisotropic counter anions (aspect ratio 22.14: 8.11: 4.17) observed so far in coordination polymers. Hydrogen-bonding of the anion links the cationic metal-organic 1D polymer into a 2-fold interpenetrated three-dimensional (3D) fsc (or sqc11) 4,6-c2-nodal net of stoichiometry (4-c)(6-c) with square-planar, 4-connected (Co in anion) and octahedral, 6-connected (Co in cation) nodes in a 1: 1 ratio. The 4-c point symbol is (4(4).6(2)), the 6-c one (4(4).6(10).8) yielding a point symbol for the fsc net of (4(4).6(2))(4(4).6(10).8). The synthesis of 1 requires the presence of a Schiff base. Synthesis under the same conditions in the absence of the Schiff base yields the molecular complex and cocrystal [Co(bpdo)(H(2)O)(5)]SO(4)center dot 1/2bpdo (2) which is related (as pseudo-polymorph) to the known solvate [Co(bpdo)(H(2)O)(5)]SO(4)center dot 2H(2)O (3) (CSD Refcodes RAX-MUZ and RAXMUZ01).

• 出版日期2010-6-20