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Electronic Structure of Cubane-Like Vanadium–Nitrogen Cationic Clusters [V4N4]+ and [V6N6]+

1
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
2
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
3
Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK
*
Author to whom correspondence should be addressed.
Inorganics 2019, 7(4), 52; https://doi.org/10.3390/inorganics7040052
Received: 20 March 2019 / Revised: 2 April 2019 / Accepted: 4 April 2019 / Published: 12 April 2019
(This article belongs to the Special Issue Applications of Density Functional Theory in Inorganic Chemistry)
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Abstract

Density Functional Theory and Complete Active Space Self-Consistent Field (CASSCF) methodologies are used to explore the electronic structure of the cationic V–N clusters, [V4N4]+ and [V6N6]+, that have been identified in recent mass spectrometric experiments. Our calculations indicate that both clusters are based on cubane-like fragments of the rock-salt lattice. In the smaller [V4N4]+ cluster, the V–V bonding is delocalized over the tetrahedron, with net bond orders of 1/3 per V–V bond. In [V6N6]+, in contrast, the V–V bonding is strongly localized in the central V2N2 unit, which has a short V=V double bond. CASSCF calculations reveal that both localized and delocalized V–V bonds are highly multi-configurational. View Full-Text
Keywords: clusters; vanadium; density functional theory; CASSCF clusters; vanadium; density functional theory; CASSCF
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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He, P.; Zhang, J.-G.; McGrady, J.E. Electronic Structure of Cubane-Like Vanadium–Nitrogen Cationic Clusters [V4N4]+ and [V6N6]+. Inorganics 2019, 7, 52.

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