Synthesis and crystal structure of the coordination polymer [Cu(ppca) _2(H_2O)(HgI_2)](H_2O) (ppca = 3,4′-bipyridine-6-carboxylic acid)

摘要

The coordination polymer [Cu(ppca′)_2(H_2O) (HgI_2)](H_2O) (1) was synthesized hydrothermally using the ligand 3,4′-bipyridine-6-carboxylic acid (ppca′). Structure 1 consists of square pyramidal copper (II) units linked by mercury (II) iodide into one-dimensional zigzag chains, which hydrogen bond into double chains. These ladders are further hydrogen bonded into a three-dimensional network that crystallizes in the monoclinic C2/c space group. In structure 1, a = 16.9058(10) ?, b = 11.2645(6) ?, c = 27.2707(15) ?, and β = 92.754(1)°. Graphical Abstract: The coordination polymer [Cu(ppca′)_2(H_2O)(HgI_2)](H_2O) (1) was synthesized hydrothermally using the ligand 3,4′-bipyridine-6- carboxylic acid (ppca′). The coordination sphere about the copper (II) and mercury (II) ions in the coordination polymer [Cu(ppca′) _2(H_2O)(HgI_2)](H_2O) (1). Displacement ellipsoids are drawn at the 50% probability level. [InlineMediaObject not available: see fulltext.] = mercury (II), [InlineMediaObject not available: see fulltext.] = copper (II), [InlineMediaObject not available: see fulltext.] = iodide, [InlineMediaObject not available: see fulltext.] = oxygen, [InlineMediaObject not available: see fulltext.] = nitrogen, [InlineMediaObject not available: see fulltext.] = carbon, and [InlineMediaObject not available: see fulltext.] = hydrogen (where not hidden).[Figure not available: see fulltext.].