Nickel complex compounds

The first Ni Mossbauer spectrum of nickel in a bioinorganic compound with determinable EFG and isomer shift was reported for a nickel complex compound with planar [NiSJ core and considered as a model compound for hydrogenase. This Mossbauer spectrum from the formal Ni compound is presented in Fig. 7.16. The observed quadrupolar interaction can be understood in terms of ligand field theory. In this approach, the b g and levels (d y2 and d ) are not occupied which is expected to cause a large negative EFG contribution [32]. 

Fig. 7.16 Ni Mossbauer spectrum at 4.2 K of a nickel complex compound with planar [NiS4] core known as a model compound for hydrogenase (source Nio.gsCro.is (97% enriched) activated at Mainz Microtron) (from [32])...

Nickel complex compounds Nickel(I) jt-allyl complex Ni(CO),... 

Nickel complex compound Tetracyclic from bicyclic isocyclics s. 18, 780... 

Synthesis of 8,9-dihydroindenes with nickel complex compounds... 

This behaviour may suggest a sequence of reduction processes for some possible nickel complex compounds in the presence of an ionic medium containing chloride anions and ammonium cations (from the eutectic composition acting as a solvent) 0i Coop>er, 1996 Zheng et al., 2005). 

Nickel complex compounds Tetracyclic from bicyclic isocyclics... 

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