Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 5 (May 2013)


metal-organic compounds



eg3111 scheme

Acta Cryst. (2013). C69, 476-479    [ doi:10.1107/S0108270113006471 ]

Two one-dimensional coordination polymers generated from a new benzimidazole bridging ligand and CdX2 (X = Br and I)

Y.-F. Zhang, J.-P. Ma, Q.-K. Liu and Y.-B. Dong

Abstract: The novel asymmetric bridging ligand 1-[(pyridin-3-yl)methyl]-2-[4-(pyridin-3-yl)phenyl]-1H-benzimidazole (L) has been used to construct the coordination polymers catena-poly[[[dibromidocadmium(II)]-[mu]3-1-[(pyridin-3-yl)methyl]-2-[4-(pyridin-3-yl)phenyl]-1H-benzimidazole] monohydrate], {[CdBr2(C24H18N4)]·H2O}n, (I), and catena-poly[[diiodidocadmium(II)]-[mu]3-1-[(pyridin-3-yl)methyl]-2-[4-(pyridin-3-yl)phenyl]-1H-benzimidazole], [CdI2(C24H18N4)]n, (II). Compounds (I) and (II) are closely related one-dimensional polymers based on 16- and 20-membered macrocycles along the chains, but they are not isomorphous. The chains are crosslinked into a two-dimensional network via hydrogen bonds and [pi]-[pi] interactions in (I), and into a three-dimensional framework through [pi]-[pi] interactions in (II). One well-ordered solvent water molecule per asymmetric unit is included in (I) and forms O...Br hydrogen bonds.

Formula: [CdBr2(C24H18N4)]·H2O and [CdI2(C24H18N4)]


hkldisplay filedownload file

Structure factor file (CIF format) (212.7 kbytes)
[ doi:10.1107/S0108270113006471/eg3111Isup2.hkl ]
Contains datablock I


hkldisplay filedownload file

Structure factor file (CIF format) (216.7 kbytes)
[ doi:10.1107/S0108270113006471/eg3111IIsup3.hkl ]
Contains datablock II


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