D. Pursche et al. / Inorganica Chimica Acta 357 (2004) 1695–1702
1701
benzimidazole–manganese bond lengths in Mn(ntb)
Acknowledgements
Financial support by the Deutsche Forschungs-
(Hsal)](ClO4) are almost within the same distance as the
obtained methylimidazole–manganese bond lengths in
1. It is noteworthy, that the coordinated oxygen of Hsal
€
gemeinschaft (DFG), the Bundesministerium fur Bil-
ꢀ
is within a distance of 2.035(3) A to the central man-
dung und Forschung and the Fonds der Chemischen
Industrie (FCI) is gratefully acknowledged.
ganese. This is remarkably short for an oxygen–Mn(II)
bond length and even shorter than the oxygen–Mn(III)
bond lengths in 2 and 3. Whereas acetate binds in 2 and
3 in an asymmetric bidentate fashion, this can be ex-
cluded for the carboxylate group of Hsal. This is man-
ifested in the large oxygen–manganese distance of
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5. Supplementary material
Further details of the crystal structure investigation
have been deposited at the Cambridge Cyrystallographic
Data Centre under the depository number CCDC
217791, 217792, and 217793. Copies of this information
can be obtained free of charge from The Directors,
CCDC, 12 Union Road, Cambridge CB2 1EZ, UK (fax:
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