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K2[Zn(CV)2(H2O)2] · 2H2O: The first Zn(II) complex structurally characterized containing the pseudo-oxocarbon Croconate Violet (CV) |
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| Authors: | Wagner M Teles Nivaldo L Speziali Luiz Fernando C de Oliveira |
| Institution: | a Departamento de Química-ICE, Universidade Federal de Juiz de Fora, Juiz de Fora-MG, 36036-330, Brazil b Departamento de Física-ICEx, Universidade Federal de Minas Gerais, Belo Horizonte-MG, 30123-970, Brazil c Departamento de Química-ICEx, Universidade Federal de Minas Gerais, Belo Horizonte-MG, 31270-901, Brazil |
| Abstract: | The synthesis, thermal behavior, spectroscopic characterization and crystal and molecular structure of a Zn(II) complex containing the pseudo-oxocarbon Croconate Violet (CV2−) dianion, namely K2Zn(CV)2(H2O)2] · 2H2O are reported. Thermal analysis has shown that the complex structure presents coordination and lattice water molecules. According to vibrational spectroscopy the Croconate Violet dianion is coordinated to Zn(II) center through the vicinal oxygen atoms in a chelating fashion with no involvement of CN moieties. The complex structure has been confirmed by single crystal X-ray diffraction analysis. The dianionic units Zn(CV)2(H2O)2]2− adopt an slight distorted octahedral geometry in which the metallic center is surrounded by six oxygen atoms. These discrete dianionic units are connected through intermolecular hydrogen bonding giving rise to a supramolecular array extended along the crystallographic a axis. |
| Keywords: | Croconate Violet Zn(II) complex Building block subunit |
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