meso-(5,5,7,12,12,14-Hexamethyl-1,4,8,11-tetra­azacyclo­tetra­deca-1,7-diene)nickel(II) bis­[dioxalato(1,10-phenanthroline)chromate(III)] octa­hydrate

✍ Scribed by Wang, Wen-Bo ;Yang, Li-Xin ;Lin, Yang

• Publisher: International Union of Crystallography
• Year: 2007
• Tongue: English
• Weight: 314 KB
• Volume: 63
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536807007209

✦ Synopsis

The asymmetric unit of the title complex, [meso-Ni(1,7-CT)][Cr(C~2~O~4~)~2~(phen)]~2~·8H~2~O (1,7-CT is 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-1,7-diene; phen is 1,10-phenanthroline) or [Ni(C~16~H~32~N~4~)][Cr(C~2~O~4~)~2~(C~12~H~8~N~2~)]~2~·8H~2~O, consists of one-half of an [Ni(1,7-CT)]^2+^ cation, one [Cr(C~2~O~4~)~2~(phen)]^−^ anion and four water molecules of crystallization. The Ni^II^ atom (site symmetry \overline{1}) is coordinated by four N atoms from the tetraazamacrocycle in a square-planar geometry, while the Cr^III^ centre has a distorted cis-CrN~2~O~4~ octahedral geometry. A network of π–π stacking interactions and O—H...O and N—H...O hydrogen bonds helps the formation of a three-dimensional structure.