Abstract
Substituted-benzoate complexes of nickel(II) of the types bidentate [Ni(mcN 3)(Bz)](PF 6) and monodentate [Ni(mcN 3)(Bz)(H 2O)](PF 6) have been prepared by acid-base reaction between the hydroxo complexes [Ni(mcN 3)(μ-OH)] 2(PF 6) 2 (mcN 3 = 2,4,4-trimethyl-1,5,9-triazacyclododec-1-ene (Me 3-mcN 3) or its 9-methyl derivative (Me 4-mcN 3)) and the corresponding benzoic acid. The paramagnetic nickel(II) complexes have been characterized in solution by NMR spectroscopy. The influence of the substituents on the hyperfine shift patterns for substituted-benzoate complexes of nickel(II) has been studied. The substituent effects upon the coordination mode of substituted benzoates have been established by X-ray diffraction.
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