Synthesis and structure of trinuclear pyrazolate-bridged acetates M3(μ-dmpz)4(Hdmpz)2(OOCMe)2 (M = Zn or Co; Hdmpz = 3,5-dimethylpyrazole)
摘要:
We discovered that reactions of hydrous cobalt and zinc acetates with 3,5-dimethylpyrazole (Hdmpz) in boiling xylene or toluene or upon the thermolysis of solid precursors (150A degrees C) yield trinuclear pyrazolate-bridged complexes M-3 (mu-dmpz)(4)(Hdmpz)(2) (OOCMe)(2)(M = Zn or Co). Depending on the crystallization conditions, these complexes contain various solvating molecules (benzene, toluene, or Hdmpz), which influences the character of intramolecular and intermolecular hydrogen bonding, as shown by X-ray crystallography.