Synthesis and crystal structure of bis(benzimidazolium) tetrahalocobaltate (II)

Bhattacharya, Rahul ; Chanda, Sumana ; Cantoni, Andrea ; Bocelli, Gabriele ; Ghosh, Ashutosh (2004) Synthesis and crystal structure of bis(benzimidazolium) tetrahalocobaltate (II) Journal of Chemical Crystallography, 34 (5). pp. 325-331. ISSN 1074-1542

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The crystal structures of benzimidazolium tetrahalocobaltates (HBz)2[CoX4] (X = Cl and Br) have been determined. The chloride salt is triclinic, P-1, with a = 7.670(3) Å, b = 8.307(3) Å, c = 15.730(2) Å and α = 87.37(3)°, β = 84.99(3)°, γ = 67.72(2)°. The bromide salt is monoclinic, C2/c, with a = 15.568(2) Å, b = 8.063(3) Å, c = 5.762(2) Å and β = 91.36(3)°. The structures of the two salts are closely related. Both the compounds contain isolated tetrahedral CoX42− anions and benzimidazolium cations. In the chloride salt, three chloride ions are involved in strong hydrogen bonding while only two bromide ions participate in the bromide salt. The greater deviation from the ideal tetrahedral geometry in CoBr42− can be related to the less extensive hydrogen-bonding network compared to the chloro complex.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
Keywords:Tetrahalocobaltates; Benzimidazolium Cation; Hydrogen Bonding; Crystal Structures
ID Code:108402
Deposited On:17 Oct 2017 12:59
Last Modified:17 Oct 2017 12:59

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