TY - JOUR
T1 - Facial π⋯Cl⋯π interactions as the directing motif of the supramolecular structures of Mg2+ and Ca2+ bis[hydrotris(pyrazolyl)borate] chloroform disolvates
AU - Ballinas-López, María Gabriela
AU - Padilla-Martínez, Itzia I.
AU - Martínez-Martínez, Francisco J.
AU - Höpfl, Herbert
AU - García-Báez, Efrén V.
PY - 2006/4
Y1 - 2006/4
N2 - The isomorphous complexes bis[hydrotris(pyrazolyl)borato]-magnesium(II) chloroform disolvate, [Mg(C9H10BN6) 2]⋯-2CHCl3, and bis[hydrotris(pyrazolyl)borato] calcium(II) chloroform disolvate, [Ca(C9́H10BN 6)2]·2CHCl3, crystallize in the cubic space group Pa3̄ with Z = 4. The metal atoms occupy sites of 3̄ 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.
AB - The isomorphous complexes bis[hydrotris(pyrazolyl)borato]-magnesium(II) chloroform disolvate, [Mg(C9H10BN6) 2]⋯-2CHCl3, and bis[hydrotris(pyrazolyl)borato] calcium(II) chloroform disolvate, [Ca(C9́H10BN 6)2]·2CHCl3, crystallize in the cubic space group Pa3̄ with Z = 4. The metal atoms occupy sites of 3̄ 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.
UR - http://www.scopus.com/inward/record.url?scp=33646014475&partnerID=8YFLogxK
U2 - 10.1107/S0108270106002575
DO - 10.1107/S0108270106002575
M3 - Artículo
SN - 0108-2701
VL - 62
SP - m132-m135
JO - Acta Crystallographica Section C: Crystal Structure Communications
JF - Acta Crystallographica Section C: Crystal Structure Communications
IS - 4
ER -