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- W2022307859 abstract "A series of alkyl dinitrile complexes of the type [M(NC(CH2)nCN)Cl2]2 [n = 2–4; M = CoII, NiII, ZnII] has been prepared by the raction of the appropriate metal chlorides and dinitriles in 2− or t-butnol [ethanol/chloroform, for n = 2 and M = CoII; ethanol, for n = 4 and M = ZnII]. The observation of only blue-shifted (relative to the uncomplexed dinitriles) νc≡N bands in the infrared spectra of the complexes supports their formulation as dinuclear species containing two N-bonded bridging dinitrile groups. The CoII and NiII complexes undergo reversible hydration to form octahedral dinuclear complexes. The nature of the solvent, coupled with the chain length of the dinitrile and the nature of the metal, can markedly affect the course of the reaction. ZincII, but not HgII, catalyzes a reaction between malononitrile and ethanol which results in the formation of a pyridine derivative. No such reaction takes place if the malononitrile is replaced by adiponitrile. The effects of the charge on the metal, the energy level of the d orbitals of the metal, and the geometry of the ligand on the coordination behavior (CN triple bond coordination versus N-coordination) of NC(CH2nCN and NC(CH2)nNR2 molecules are also discussed." @default.
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- W2022307859 date "1962-10-01" @default.
- W2022307859 modified "2023-09-26" @default.
- W2022307859 title "The mechanism of aldiminic hydrogenation of dinitrile of adipic acid and the effect of the nickel catalyst carriers on the course of the process" @default.
- W2022307859 doi "https://doi.org/10.1016/0021-9517(62)90116-1" @default.
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