Zusammenfassung
The new carbonyl nickelate salt [A([18]crown-6)](2)[Ni(CO)(3)]center dot 8NH(3) (A = K, Rb) serendipitously crystallized from a solution of (PPh3)(2)Ni(CO)(2), [18]crown-6, [2.2.2]cryptand, and K6Rb6Ge17 in liquid ammonia. The [Ni(CO)(3)](2-) anion represents the first tricarbonyl compound of nickel characterized by X-ray diffraction studies and completes the row of known carbonyl metalates. The ...
Zusammenfassung
The new carbonyl nickelate salt [A([18]crown-6)](2)[Ni(CO)(3)]center dot 8NH(3) (A = K, Rb) serendipitously crystallized from a solution of (PPh3)(2)Ni(CO)(2), [18]crown-6, [2.2.2]cryptand, and K6Rb6Ge17 in liquid ammonia. The [Ni(CO)(3)](2-) anion represents the first tricarbonyl compound of nickel characterized by X-ray diffraction studies and completes the row of known carbonyl metalates. The planar anion displays approximately D-3h symmetry. The calculated electron localization function (ELF) of the complex shows plane basins above and below the molecular plane and the twofold negative charge is spread over the Ni(CO)(3) entity.
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