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- W2078319430 abstract "Cyanides and isocyanides of first-row transition metal M(CN) (M = Sc−Zn) are investigated with quantum chemistry techniques, providing predictions for their molecular properties. A careful analysis of the competition between cyanide and isocyanide isomers along the transition series has been carried out. In agreement with the experimental observations, late transition metals (Co−Zn) clearly prefer a cyanide arrangement. On the other hand, early transition metals (Sc−Fe), with the only exception of the Cr(CN) system, favor the isocyanide isomer. The theoretical calculations predict the following unknown isocyanides, ScNC(3Δ), TiNC(4Φ), VNC(5Δ), and MnNC(7Σ+), and agree with the experimental observation of FeNC(6Δ) and the CrCN(6Σ+) cyanide. First-row transition metal cyanides and isocyanides are predicted to have relatively large dissociation energies with values within the range 80−101 kcal mol-1, except Zn(CN), which has a dissociation energy around 50−55 kcal mol-1, and low isomerization barriers. A detailed analysis of the bonding has been carried out employing the topological analysis of the charge density and an energy decomposition analysis. The role of the covalent and electrostatic contributions to the metal−ligand bonding, as well as the importance of π bonding, are discussed." @default.
- W2078319430 created "2016-06-24" @default.
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- W2078319430 date "2007-06-20" @default.
- W2078319430 modified "2023-10-18" @default.
- W2078319430 title "Cyanides and Isocyanides of First-Row Transition Metals: Molecular Structure, Bonding, and Isomerization Barriers" @default.
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- W2078319430 doi "https://doi.org/10.1021/jp072434n" @default.
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