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The self-assembly of [Zn(L)(H 2 O) 2 ]·Cl 2  and sodium 1,3,5-cyclohexanetricarboxylate yields a 3D hydrogen-bonded polymer [Zn(L)(H 2 chtc - )]H 2 chtc - ·H 2 O ( 1 ) (L=3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,0 1.18 ,0 7.12 ]docosane, H 3 chtc=1,3,5-cyclohexanetricarboxylic acid). Complex  1  is characterized by X-ray crystallography, spectroscopy and thermogravimetric analyzer. The coordination geometry around the zinc(II) atom is a distorted square-pyramidal with four nitrogen atoms of the macrocycle occupying the basal sites and one carboxylate oxygen atom of the H 2 chtc -  ligand at the apical position. The compound crystallizes in the monoclinic system  p 2 1 /c with  a =8.5287(8),  b =39.241(3),  c =12.6135(11) Å, β (°)= 104.525(6)°,  V =4086.5(6) Å 3 ,  Z =4. The IR spectrum and the TGA behavior of the complex are significantly affected by the 1,3,5-cyclohexanetricarboxylic acid.

Self-assembly of zinc(II) tetraaza macrocyclic complex and 1,3,5-cyclohexanetricarboxylic acid