Liquid hydrogen chloride as an ionizing solvent. Part XIII. Reactions of tetracarbonylnickel and tricarbonylnitrosylcobalt

Preparation, properties, and crystal structure of a cationic nickel nitrosyl bicyclic phosphite complex

“…14( 6) 34 (5) -2 (7) 01 -0.0208 (9) 0.122 (1) 0.299 (1) 86 ( 8) 4 (2) 3 (1) 5 (1) 31 ( 7) 1 (1) Oil 0.1306 (9) 0.035 (1) 0.3266 ( 9) 7 (1) 0(1) 7(1) 2(1) 6( 1) 1 (1) 012 0.2073 (6) -0.129 (1) 0.4422 ( 6) 71 ( 5) 0( 2) 50 (5) 9 (1) 31 (4) -9 (9) 013 0.0952 ( 9) 0.191 (1) 0.336 (1) 4 (1) 0( 2) 6 (1)…”

“…Both [Ni(TEP)NO]+ and [Ni(NO)(P(OCH2)3CMe)3]+ have "linear" M-N-O fragments being 180 and 176.8 (18)°, respectively. The only other reported crystal structure of a nickel nitrosyl complex is Ni(N3)NO(PPh3)248 in which the Ni-N distance is significantly longer at 1.686 (7) Á and the Ni-N-0 angle is only 152.7 (7)°. Both the longer bond distance and the more "bent" angle classify this nitrosyl as more NO--like than the other two linear nickel nitrosyl cases.…”

Binuclear Homoleptic Nickel Carbonyls: Incorporation of Ni−Ni Single, Double, and Triple Bonds, Ni2(CO)x (x = 5, 6, 7)

“…According to this rule, the next even electron transition metal, i.e., Ni, should form a binuclear carbonyl with the formula Ni 2 (CO) 7 . There are several communications reporting the experimental characterization of the ionic species Ni 2 (CO) 8 + , Ni 2 (CO) 7 - , and Ni 2 (CO) 6 + , where structures with one and two bridging carbonyls were proposed, on the ternary complex Ni 2 (CO) 3 Cl 4 with three bridging carbonyls, and binuclear carbonyl complexes with small bite bridging bidentate phosphine ligands. − The Ni−Ni distances in these complexes were found by X-ray diffraction to be in the 2.577−2.694 Å range. In addition, the Ni 2 (CO) 6 H - anion has been isolated and characterized by X-ray diffraction .…”

Nickel Tetracarbonyl

“…A variety of other halogen compounds, e.g. 79 Oxidation with the Karl Fischer reagent (pyridine-SC>2-l2) has also been investigated. Iodine azide reacts to give a mixture of nickel iodide and nickel azide (equation 4).…”

“…79 ' 81 Nitric oxide reacts to form [Ni(NO)(NO 2 )], 82 while the product of the reaction with dinitrogen tetroxide depends upon the reaction conditions: in the gas phase nickel nitrite is formed while reaction, in the liquid phase leads to the nitrate. 79 ' 81 Nitric oxide reacts to form [Ni(NO)(NO 2 )], 82 while the product of the reaction with dinitrogen tetroxide depends upon the reaction conditions: in the gas phase nickel nitrite is formed while reaction, in the liquid phase leads to the nitrate.…”