Nickel-DMSO complex

NBP reagent la 90, 359 Neatan perservation la 134 Neoamygdalline lb 121 Neo-kestose lb 423 Neomycin la 287,423 Neostigmine lb 290 Nephopam la 45 Nerol la 76,327 -, glucoside la 327 Netilmicin la 105,286,287 Nettle leaf extract lb 217 Neuroleptics lb 352 Nickel-DMSO complex lb 259 Nickel cations la 144,145,311 lb 259-260... 

Cations e.g. nickel [1-7] cobalt [4-7] copper, iron, manganese silver [6] DMSO complexes of cobalt, nickel [8] HjC CHj HO-N N-OH... 

Benzylic and allylic halides dimerize (homo-couple) readily in the presence of a number of metal species. Synthetically useful yields of homo-coupled products have been obtained using chlorotris(tri-phenylphosphine)cobalt(I), nickel(O) complexes generated in situ, ° Te " species, VCb/LAH, CrCh/LAH and TiCb or TiCl4/LAH. Representative examples are given in equations (37) and (38). Treatment of 8-bromocrotonates with zinc(O) in DMSO leads to dimerization. ... 

Subsequent reaction of porphyrazines 170 and 171 with Cu(OAc)2 resulted in the selective metalation within the macrocyclic cavity to provide the corresponding copper complexes 166 (62%) and 172 (47%). Treatment of pz 170 with manganese acetate and iron sulfate in dimethyl sulfate gave the dmso adducts 173 (70%) and 174 (85%), respectively (168). Axial ligation was also observed when other metals were incorporated such as cobalt acetate, nickel acetate, and zinc acetate to give the metal complexes 175 (83%), 176 (70%), and 177 (90%) as the hydrates. The axial ligand of... 

The complexes HgNi(NCS)4, HgNi(NCSe)4 and HgNi(NCS)2(NCSe)2 are supposed to contain six-coordinate nickel(II) in a polynuclear structure.1082 1089 All of the complexes with the general formula HgNi(NCX)4 behave as Lewis acids towards a number of bases such as alcohols, pyridine and substituted pyridines, PPh3, bipy, phen, DMSO, etc., giving in most cases polynuclear species.1084,1089... 

Dimethyl sulfoxide (DMSO) and N, N-dimethylformamide (DMF) are widely used as reaction media and as solvents for solid substances. They are the precursors of many sulfoxides (250) and amides (251) which are reported to form a variety of complexes with nickel(II).1881,1882... 

When nickel salts of coordinating anions are used, for example Ni(NCS)2 and Ni(N03)2, complexes with a number of coordinated monodentate ligand molecules less than six are obtained.1888,1889,1892 Assignment of IR spectra of the Ni(DMSO)2+ cation using lsO isotope shifts has been reported.1893... 

The crystal structure of bis(NN-di-isobutyldithiocarbamato)nickel(ii). [Ni(S2-CNBu 2)2], shows that nickel is approximately square planar and co-ordinated by two symmetric bidentate ligands (Ni—S = 2.20 A) the ligand symmetry approximates to 2- The reduction mechanism of a series of nickel(ii) dithiocarbamates has been investigated in DMSO at the mercury electrode it is claimed to involve a dissociation to a nickel species which is more easily reduced than the nickel(ii) dithiocarbamate. An e.p.r. study of the reversible electrochemical reduction of nickel(ii) diethyldithio-carbamates in the presence of 2,2 -bipyridyl show that a bipy radical anion is formed initially. Ligand alkylation occurs when ao -dibromo-o-xylene is added to bis-(NiV-diethyldithiocarbamato)nickel(ii). The electron-transfer properties of 16 nickel(ii) dithiocarbamate complexes have been studied in acetone at a platinum electrode. Their oxidation is difficult and irreversible the overall process is ... 

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