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

Crystal and molecular structure of pentakis(4-methyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane)cobalt(I)(acetonitrile)trinitratocobalt(II), {Co[P(OCH2)3CMe]5}[Co(NO3)3NCMe]

“…In a recent communication1 Bressan and Rigo reported the new synthesis of ONCo(PR2R')3 complexes (R' = alkyl or H) via reaction 1. In an effort to synthesize the isoelectronic and ¿-PrOH Co(N03)2'6H20 + PR2R'-> ONCo(PR2R')3 + OPR3 (1) isostructural cobalt analogue of the ONNi [P(OCH2)3CMe] 3+ cation whose molecular structure2 and infrared properties3 we reported recently, we sought to prepare ONCo[P-(OCH2)3CMe]3 by this route. Under the conditions described for this reaction,1 however, we show in this paper that Co(II) disproportionates to give [CoL5]2[Co(N03)4] (1) and [CoL6]2[Co(N03)4]3 (2) while the isomeric phosphine P-(CH20)3CMe forms ONCo[P(CH20)3CMe] 3 (3) as expected. We also report the further reaction of 1 with acetonitrile to give the title compound 4 and the structure of 4 obtained by diffraction means is described.…”

Nickel-Catalyzed Hydrosilylation of CO2 in the Presence of Et3B for the Synthesis of Formic Acid and Related Formates

“…On the other hand, the Ni–CO bond distance in 2 (1.762 Å average) is close to the Ni–CO bond distance in [Ni(CO)(np 3 )] (1.74 Å), [(dtbpe)Ni(CO) 2 ] (1.787 Å average), and {[(dippe)Ni(CO)] 2 (μ-dippe)} (1.759 (3) Å) but shorter than those reported for Ni(CO) 4 (1.84 Å) and [(CO) 3 Ni(PPh 2 ) 2 Ni(CO) 3 )] (1.8003(8) Å) . The Ni–P (2.206 Å average) bond distances are in the range of closely related tetrahedral d 10 nickel complexes such as [Ni(P(OCH 2 ) 3 CCH 3 ) 3 NO]BF 4 (2.186 Å average), Ni(CO)(np 3 )] (2.215 Å average), [(dtbpe)Ni(CO) 2 ] (2.23 Å average), and {[(dippe)Ni(CO)] 2 (μ-dippe)} (2.23 Å)…”

Local Structure of CPO-27-Ni Metallorganic Framework upon Dehydration and Coordination of NO

“…66, 69 The situation becomes slightly more complex in the case of NO adsorbed on a surface. When NO is adsorbed on a well defined surface, difference is made between linear and tilted adsorption geometries (both characterized by a Ni-N-O angle close to 180°), depending whether the Ni-N-O direction is perpendicular or not to the surface.…”