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Crystal structures of three complexes of zinc chloride with tri-tert-butyl-phosphane

机译:氯化锌与三叔丁基膦的三种配合物的晶体结构

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Under anhydrous conditions and in the absence of a Lewis-base solvent, a zinc chloride complex with tri-tert-butyl-phosphane as the μ-bridged dimer is formed, viz. di-μ-chlorido-bis-[chlorido-bis-(tri-tert-butyl-phosphane)zinc], [ZnCl4(C12H27P)2], (1), which features a nearly square-shaped (ZnCl)2 cyclic core and whose Cl atoms inter-act weakly with C—H groups on the phosphane ligand. In the presence of THF, monomeric di-chlorido-(tetra-hydro-furan-κO)(tri-tert-butyl-phosphane-κP)zinc, [ZnCl2(C4H8O)(C12H27P)] or [P(tBu3)(THF)ZnCl2], (2), is formed. This slightly distorted tetra-hedral Zn complex has weak C—H?Cl inter-actions between the Cl atoms and phosphane and THF C—H groups. Under ambient conditions, the hydrolysed complex tri-tert-butyl-phospho-nium aqua-tri-chlorido-zincate 1,2-di-chloro-ethane monosolvate, (C12H28P)[ZnCl3(H2O)]·C2H4Cl2 or [HPtBu3]+ [(H2O)ZnCl3]?·C2H4Cl2, (3), is formed. This complex forms chains of [(H2O)ZnCl3]? anions from hydrogen-bonding inter-actions between the water H atoms and Cl atoms that propagate along the b axis.
机译:在无水条件下,在不存在路易斯碱溶剂的情况下,形成了氯化锌与三叔丁基膦作为μ-桥联二聚体的氯化物络合物。二μ-氯代双-[氯代双-(三叔丁基膦)锌],[ZnCl4(C12H27P)2],(1),其特征是具有近似方形(ZnCl)2的环状核并且其Cl原子与膦配体上的CH基弱相互作用。在四氢呋喃的存在下,单体二氯-(四氢呋喃-κO)(三叔丁基膦-κP)锌,[ZnCl2(C4H8O)(C12H27P)]或[P(tBu3)(THF)形成[ZnCl 2],(2)。这种略微扭曲的四面体Zn络合物在Cl原子与膦和THF CHH基团之间具有弱的CHHCl相互作用。在环境条件下,水解的三叔丁基磷鎓水合三氯氰基锌酸盐1,2-二氯乙烷单溶剂化物(C12H28P)[ZnCl3(H2O)]·C2H4Cl2或[HPtBu3] +形成[(H 2 O)ZnCl 3]→·C 2 H 4 Cl 2(3)。该络合物形成[(H2O)ZnCl3]?氢原子与沿b轴传播的Cl原子之间氢键相互作用产生的阴离子。

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