Crystal structures of three mercury(II) complexes [HgCl2L] where L is a bidentate chiral imine ligand

Acta Crystallographica Section E: Crystallographic Communications

Portillo, O.²  Moreno, G.E.³  Herná³  rrez, R.⁵  Bernè⁵  s, S.⁶  z, A.⁷  ndez, G.⁹  Gutié⁹  Ruí^1,10 

[1] Departamento de MicrobiologíInstituto de FíLaboratorio de Sía, Facultad de Ciencias Químicas, Universidad Autónoma de Puebla, A.P. 1067, 72001 Puebla, Pue., Mexico;noma de Puebla, Av. San Claudio y 18 Sur, 72570 Puebla, Pue., Mexico;noma de Puebla, Puebla, Pue., Mexico;ntesis de Complejos, Facultad de Ciencias Quísica, Universidad Autó

关键词: CRYSTAL STRUCTURE;    MERCURY;    SCHIFF BASE;    DISPHENOIDAL GEOMETRY;   

DOI  :  10.1107/S2056989015020368

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

The crystal structures of three complexes [HgCl2L] were determined, namely, (S)-(+)-di­chlorido­[1-phenyl-N-(pyridin-2-yl­methyl­idene)ethyl­amine-κ2N,N′]mercury(II), [HgCl2(C14H14N2)], (S)-(+)-di­chlorido­[1-(4-methyl­phen­yl)-N-(pyridin-2-yl­methyl­idene)ethyl­amine-κ2N,N′]mercury(II), [HgCl2(C15H16N2)], and (1S,2S,3S,5R)-(+)-di­chlorido­[N-(pyridin-2-yl­methyl­idene)isopino­camph­eyl­amine-κ2N,N′]mercury(II), [HgCl2(C16H22N2)]. The complexes consist of a bidentate chiral imine ligand coordinating to HgCl2 and crystallize with four independent mol­ecules in the first complex and two independent mol­ecules in the other two. The coordination geometry of mercury is tetra­hedral, with strong distortion towards a disphenoidal geometry, as a consequence of the imine bite angle being close to 70°. The Cl—Hg—Cl angles span a large range, 116.0 (2)–138.3 (3)°, which is related to the aggregation state in the crystals. For small Cl—Hg—Cl angles, complexes have a tendency to form dimers, via inter­molecular Hg⋯Cl contacts. These contacts become less significant in the third complex, which features the largest intra­molecular Cl—Hg—Cl angles.

【 授权许可】

CC BY