Abstract Under hydrothermal conditions, Co(II) nitrate reacts with 4,4′-bis(2-methyl-1 H -imidazol-1-yl)biphenyl (L 1 ) and benzene-1,2,4,5-tetracarboxylic acid (H 4 L 2 ) to yield the new complex Co(HL 1 )(L 2 ) 0.5 (H 2 L 2 ) 0.5 ·H 2 O ( 1 ); when Cu(II) nitrate is reacted with the L 1 and 3-nitrophthalic acid (H 2 L 3 ), the product with the formula Cu 2 (L 1 ) 2 (L 3 ) 2 (H 2 O) 4 ·6H 2 O ( 2 ) is obtained. Complexes 1 and 2 have been characterized by single-crystal X-ray diffraction, IR spectroscopy, and elemental and thermogravimetric analyses. In the solid state, complex 1 shows a net structure with binodal (3,4)-connected (4.6 2 ) 2 (4 2 .6 2 .8 2 ) topology; while complex 2 displays a 1D zigzag structure. Tetra-nuclear and hexa-nuclear water clusters exist in the structure of this compound 2 . The fluorescence properties of compound 1 were also investigated.
Mao et al. (Thu,) studied this question.