A new cadmium complex [Cd(bpndc)(phen)2(H2O)] ·2H2O (1) was obtained by hydrothermal assembly of Cd(NO3)2·4H20 with a benzophenone-4,4′-dicarboxylic acid (H2bpndc) in the presence of N-donor ligands, 1,10- phenanthroline (phen). Complex 1 crystallizes in tetragonal, space group 141/a with a=3.158 69(16) nm, b = 3.158 69(16) nm, c = 1.544 59(17) nm, V=15.411(3) nm3, Z =16, C39H30N4CdO8, Mr=795.07, Dc=1.371 g·cm-3, μ= 0.621 mm, F(000)=6 464, Rint=0.0727, R1=0.052 3, wR2=0.116 6. Single-crystal X-ray diffraction analysis revealed that each me...