Synthesis and crystal structure of two {M(4,4’-dpdo)2[N(CN)2]2(H2O)} complexes (M = Co(II), Mn(II); 4,4’-dpdo-4,4’-bipyridyl-N,N’-dioxide)
Zhao Q.-H., Liu Y.-Q., Zhang M.-S., Fang R.-B.
Ключевые слова: dicyanamide, hydrogen bonding, molecular crystals, crystal structure
Страницы: 564-568
Подраздел: КРИСТАЛЛОХИМИЯ
Аннотация
The ligand 4,4? -bipyridyl-N,N? -dioxide (4,4? -dpdo) was used in the synthesis of two complexes, {Co(4,4? -dpdo)2[N(CN)2]2(H2O)2} (1) and {Mn(4,4? -dpdo)2[N(CN)2]2(H2O)2} (2). The complexes were found to be isostructural, triclinic, space group P-1 with Z = 1 and the following unit cell parameters: a = 8.158(8) Å , b = 8.865(8) Å , c = 9.477(9) Å ; a = 70.988(13)° , b = 78.778(13)° , g = 71.964(10)° ; V = 612.8(10) Å 3 for 1; a = 8.247(14) Å , b = 9.001(16) Å , c = 9.707(17) Å ; a = 71.02(2)° , b = 78.63(2)° , g = 72.62(2)° ; V = 646(2) Å 3 for 2. Final R-values were 0.075 and 0.083 for 1 and 2, respectively. In the molecules of the complexes, Co(II) or Mn(II) cation is coordinated by two O-atoms of two 4,4? -dpdo ligands, two terminal N-atoms of two dicyanamides, and two O-atoms of water molecules. The crystals are molecular, with adjacent complex molecules linked through a system of O—H…N and O—H…O hydrogen bonds.
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