Acta Crystallographica Section C

Crystal Structure Communications

Volume 58, Part 4 (April 2002)

metal-organic compounds

 

trans-Bis(cyano-C)(1,4,8,11-tetraazacyclotetradecane-⁴N)manganese(III) perchlorate, a low-spin manganese(III) complex

S. Mossin, H. O. Sørensen and H. Weihe

Abstract: The crystal structure of the low-spin (S = 1) Mn^III complex [Mn(CN)₂(C₁₀H₂₄N₄)]ClO₄, or trans-[Mn(CN)₂(cyclam)](ClO₄) (cyclam is the tetradentate amine ligand 1,4,8,11-tetraazacyclotetradecane), is reported. The structural parameters in the Mn(cyclam) moiety are found to be insensitive to both the spin and the oxidation state of the Mn ion. The difference between high- and low-spin Mn^III complexes is that a pronounced tetragonal elongation of the coordination octahedron occurs in high-spin complexes and a slight tetragonal compression is seen in low-spin complexes, as in the title complex.

Formula: [Mn(CN)₂(C₁₀H₂₄N₄)]ClO₄

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