Tetracarbonylnickel

[13463-39-3] C4NiO4 (MW 170.73) InChI = 1S/4CO.Ni/c4*1-2; InChIKey = AWDHUGLHGCVIEG-UHFFFAOYSA-N (oxidation of aryl halides and alkynes; oxidative addition of alkyl and aryl halides; rearrangement and cyclization; carbonylation) Physical Data: mp −25 °C; bp 43 °C; d 1.32 g cm−3; based on calorimetry, the average NiC bond strength is 35 kcal mol−1; bond distances NiC 1.82 Å and CO 1.15 Å. Solubility: insol H2O; sol most organic solvents. Form Supplied in: colorless liquid in a lecture bottle or in a cylinder, usually under CO pressure. Analysis of Reagent Purity: IR spectrum, νCO = 2040 cm−1; 13C NMR spectrum, δ = 193 ppm; UV spectrum, λmax = 206 nm (ε = 105). Preparative Method: formed from finely divided Nickel and Carbon Monoxide gas to give a four-coordinate d10 metal complex, with tetrahedral geometry, that satisfies the 18-electron rule. Handling, Storage, and Precautions: toxic; flammable in air; must be used in a well ventilated fume hood and kept under an inert atmosphere.