Acta Cryst. (2002). E58, m457-m459  [ doi:10.1107/S1600536802013181 ]

A comparative study of the interactions of cobalt(III) with naphtholate and phenolate moieties

M. S. Shongwe, S. A. Al-Juma and M. A. Fernandes

Abstract: The structural motif of piperidinium bis[N-(2-hydroxynaphthalen-1-yl)sarcosinato]cobaltate(III), (C₅H₁₀NH₂)[Co(C₁₄H₁₃NO₃)₂], (I), displays a chain of two alternating discrete mononuclear Co^III complex anions with intervening piperidinium counter-ions. The piperidinium cations and complex anions interact via N-HO hydrogen bonding. Each of the tridentate ligands coordinates to the Co atom in a facial mode, giving a pseudo-octahedral geometry consistent with the mixed donor-atom environment, and each complex anion exhibits C_i symmetry about the metal centre. The average Co^III-O_naphtholate distance in (I) lies within the observed range of normal values for Co^III-O_phenolate distances in related compounds, indicative of similarity of coordination behaviour between the naphtholate and phenolate moieties.

Online 31 July 2002

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