Facial pi ? ?Cl? ? ? piinteractions as the directing motif of the supra-molecular structures of Mg2+ and Ca2+ bis[hydrotris(pyrazolyl)borate] chloroform disolvates

The isomorphous complexes bis[hydrotris(pyrazolyl)borato]- magnesium(II) chloroform disolvate, [Mg(C9H10BN6)2] - 2CHC13, and bis[hydrotris(pyrazolyl)borato]calcium(II) chloroform disolvate, [Ca(C9H10BN6)42CHC13, crystallize in the cubic space group PO with Z = 4. The metal atoms occupy sites of 3 sy...

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Bibliographic Details
Published in:Acta crystallographica. Section C, Crystal structure communications Crystal structure communications, 2006-04, Vol.62 (4), p.m132-m135
Main Authors: Ballinas-Lopez, Maria Gabriela, Padilla-Martinez, Itzia I, Martinez-Martinez, Francisco J, Hopfl, Herbert, Garcia-Baeza, Efren V
Format: Article
Language:English
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Summary:The isomorphous complexes bis[hydrotris(pyrazolyl)borato]- magnesium(II) chloroform disolvate, [Mg(C9H10BN6)2] - 2CHC13, and bis[hydrotris(pyrazolyl)borato]calcium(II) chloroform disolvate, [Ca(C9H10BN6)42CHC13, crystallize in the cubic space group PO with Z = 4. The metal atoms occupy sites of 3 symmetry, and their coordination is very similar to that found for the unsolvated Mg[HB(Pz)3]2 and Ca[HB(Pz)3]2 complexes (Pz is pyrazole). The inclusion of chloroform molecules on threefold rotation axes not only leads to high-symmetry crystal structures but also plays an important role in stabilizing the three-dimensional supramolecular architecture through facial Pz? ? -Cl? ? ?Pz interactions.
ISSN:0108-2701
DOI:10.1107/S0108270106002575