catena-Poly[[dibromozinc(II)]-μ-(R,R)-1,2-diacetamidocyclohexane]

Abstract

The asymmetric unit of the title compound, [ZnBr2(C10H18N2O2)], contains a fragment of the polymeric chain [(R,R)‐1,2‐diacet­amido­cyclo­hexane­di­bromo­zinc(II)]n. The Zn atom is coordinated by two bromide anions and two 1,2‐diacet­amido­cyclo­hexane (DCH) ligands acting as 1,8‐bridging via the O atoms. The complex exhibits a distorted tetrahedral geometry around the Zn atom. The crystal packing is characterized by several van der Waals contacts, these interactions resulting in chains parallel to the b axis.

Dibromidobis(4-hydroxy-1,5-dimethyl-2-phenyl-3-pyrazolone)zinc(II)

“…The Zn-O and Zn-Br distances in the coordination polyhedron are 1.961 (3)/2.015 (3) Å and 2.351 (1)/2.379 (1)Å, respectively, in good agreement with those found in similar Zn II tetrahedral coordination (Bekaert et al, 2003). The difference between the two Zn-O (or the two Zn-Br) bond lengths can be explained by the presence of the O5- (Table 1) which causes the stretching of the Zn-O24 (or Zn-Br1) bond.…”

“…The hydroxyamide structure which is close to lactamide let us to test it as a metal pinch. Following our work concerning lactamide and zinc(II) complex (Bekaert et al, 2003), we now report a new zinc complex with 4-hydroxyantipyrine.…”

“…For related literature, see: Bekaert et al (2003Bekaert et al ( , 2007; Filiz et al (2008); Lemoine et al (2007); Matzke et al (2000); Melov et al, (1998); Panneerselvam et al (1996); Tougu et al (2008). (7) 151Symmetry codes: (i) x þ 1; y; z; (ii) Ày þ 1; x À 1; z þ 1 4 .…”