Synthesis and Crystal Structure of the Coordination Complex Cu(ppca′)2(H2O)2 (ppca′ = 3,4′-Bipyridine-6-Carboxylic Acid)

The coordination complex Cu(ppca′) 2 (H 2 O) 2 ( 1 ) was synthesized hydrothermally using the ligand 3,4′-bipyridine-6-carboxylic acid (ppca′). Complex 1 consists of pseudo-octahedral copper (II) units hydrogen bonded into a three-dimensional network that crystallizes in the monoclinic P2 1 /n space group. In complex 1 , a = 5.3429(4) Å, b = 29.343(2) Å, c = 6.7940(5) Å, and β = 110.635(2)°. Graphical Abstract The coordination complex Cu(ppca′) 2 (H 2 O) 2 ( 1 ) was synthesized hydrothermally using the ligand 3,4′-bipyridine-6-carboxylic acid (ppca′). The coordination sphere about the copper (II) ion in the complex Cu(ppca′) 2 (H 2 O) 2 ( 1 ). Displacement ellipsoids are drawn at the 50% probability level. = nitrogen, = copper (II), = oxygen, = carbon, and = hydrogen.