New coordination polymers with extended arm cyclotriguaiacyclene ligands: 1D chains, and interpenetrating or polycatenating 2D (4~2.6 ~2)(4.6~2)_2 networks

摘要

A series of new 1D chain and 2D coordination polymers with cyclotriguaiacylene-type ligands are reported. A zig-zag 1D coordination chain is found in complex [Cd_2(4ph4py)(NO_3)_3(H _2O)_2(DMA)_2]·(NO_3) ·(DMA)_.4, where 4ph4py = tris[4-(4-pyridyl)benzoyl]- cyclotriguaiacylene and DMA = dimethylacetamide, while complex [Zn(4ph4py) _2(CF_3COO)(H_2O)]·(CF_3COO)(NMP) _7, where NMP = N-methylpyrrolidone, has a doubly bridged coordination chain structure. Complexes [M(3ph3py)(NO_3)_2]·(NMP) _4 where M = Co or Zn, 3ph3py = tris[3-(3-pyridyl)benzoyl] cyclotriguaiacylene, are isostructural and feature 1D ladder coordination chains. Complexes [Cd_2(4ph4py)_2(NO_3) _4(NMP)]·(NMP)_9(H_2O)_4 and [Co(4ph4py)(H_2O)_2]·(NO_3) _2·(DMF)_2, where DMF = dimethylformamide, both have (3,4)-connected 2D coordination polymers with a rare (4~2.6 ~2)(4.6~2)_2 topology. A 2D coordination polymer with this topology is also found in complex [Co_2(3ph4py) _2(NO_3)(H_2O)_5]·(NO _3)_3·(DMF)_9 where 3ph4py = tris[3-(4-pyridyl)benzoyl]cyclotriguaiacylene. All 2D coordination polymer complexes are interpenetrating or polycatenating. [Co_2(3ph4py) _2(NO_3)(H_2O)_5]~(3+)polymers form a 2D→3D polycatenation showing self-complementary "hand- shake" interactions between the host-type ligands.