Hm. Alvarez et al., Modeling nickel hydrogenases: Synthesis and structure of a distorted octahedral complex with an unprecedented [NiS4H2] core, INORG CHEM, 40(23), 2001, pp. 5736
The homoleptic nickel(H) bis(mereaptoimidazolyl)-borate complex Ni(Bm(Me))(
2) has been readily synthesized in good yield and characterized by a combin
ation of analytical and spectroscopic techniques. Its X-ray structure confi
rmed the presence of a novel [NiS4H2] species having two cis Ni . . .H-B in
teractions and an overall distorted octahedral geometry, thereby providing
an unprecedented structural model compound for the active form of the nicke
l center in NiFe hydrogenases.