| The Ni K-edge x-ray absorption near edge structure (XANES) and extended x-ray absorption fine structure (EXAFS) of thirty-seven nickel (II) model complexes and eight nickel (III) model complexes were analyzed. The 1s ;The nickel-containing hydrogenase from the purple photosynthetic bacteria Thiocapsa roseopersicina was analyzed for both XANES and EXAFS. The enzyme was poised in the hydrogen-reduced, active form corresponding to nickel signal-C. The results are consistent with a mixed-donor, five-coordinate site having 3 ;Four novel nickel (II) complexes were synthesized. The compounds include a dimeric nickel arylthiolate complex, (Ni(Me... |
