When metal-organic coordination polymers [M(2)(SO(4))(TTTMB)(2)(H(2)O)(4)]center dot H(2)BTEC center dot 2H(2)O (M = Cd: 1, Zn: 2; TTTMB = 1,3,5-tris(triazol-1-ylmethyl)-2,4,6-trimethylbenzene, H(4)BTEC = 1,2,4,5-benzenetetracarboxylate acid) with two dimensional layers were suspended in Cu(NO(3))(2) aqueous solution, a metal-organic coordination polymer [Cu(2)(TTTMB)(BTEC)(mu-H(2)O)(H(2)O)(4)]center dot 6H(2)O (3) with three dimensional nets would be obtained by solvent-mediated cation-exchange reaction. The direct reaction of TTTMB and H(4)BTEC with CuSO(4) in the absence of 1 or 2 affords different crystal [Cu(3)(TTTMB)(2)(H(2)BTEC)(3)(H(2)O)(3)]center dot 3H(2)O (4). (C) 2011 Elsevier B.V. All rights reserved.