Tuning cadmium coordination architectures using 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene and sulfoisophthalate

In our efforts to tune Cd(II) coordination polymer architectures, three Cd(II) coordination polymers, {[Cd-3(bbtz)(4)(sip)(2)(H2O)(4)]center dot 12H(2)O}(n) (1), {[Cd-3(bbtz)(3)(sip)(2)(H2O)(6)]center dot 4H(2)O}(n) (2) and {[Cd-3(bbtz)(2)(sip)(2)(H2O)(8)]center dot 4H(2)O}(n) (3), were synthesized by the slow diffusion, direct reaction and hydrothermal methods using 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene (bbtz) and sulfoisophthalate (sip). 1 shows a novel two-fold interpenetrating 5-connected 3D network, with a point symbol of 4(4).6(3).8(3). 2 displays an unusual 4-connected 2D network, with a point symbol of 4(2).6(3).8. 3 exhibits an unusual (3,3)-connected 2D network, with a point symbol of (8(3))(2) and a 2D -> 3D polythreaded network. The diverse structures demonstrate that the structures of coordination polymers can be tuned by the synthesis method. The luminescence and thermal stability were investigated.