Articles producció científica> Química Física i Inorgànica

Trends in the Bond Multiplicity of Cr2, Cr3, and Cr2M (M = Zn, Ni, Fe, Mn) Complexes Extracted from Multiconfigurational Wave Functions

  • Identification data

    Identifier: imarina:5873701
    Authors:
    Spivak M, López X, de Graaf C
    Abstract:
    Extended metal atom chains constitute an interesting class of molecules from both theoretical and applied points of view. In the chromium-based series Cr2M(dpa)4X2 (with M = Zn, Ni, Fe, Mn, Cr), the direct metal-metal interactions span a wide range of possibilities and so do their associated properties. The multiplicity and symmetry components of the metal-metal bond are herein analyzed via the effective bond order (EBO) concept using complete active space self-consistent field wave functions and compared with similar bimetallic Cr2L4X2 systems. The bond multiplicity follows a trend dominated by the Cr-Cr distance which, in turn, depends on the nature of the axial ligand (X). Cr2M compounds present asymmetric structures with virtually no interaction between the Cr2 unit and M, whereas fully symmetric structures with delocalized bonding among the three metals are also possible in Cr3 complexes. In such cases, a strategy that involves localization of the molecular orbitals into each Cr-Cr pair is applied to quantify the contribution of each pair to the overall metal-metal bond multiplicity.
  • Others:

    Author, as appears in the article.: Spivak M, López X, de Graaf C
    Department: Química Física i Inorgànica
    URV's Author/s: De Graaf, Cornelis / López Fernández, Javier
    Keywords: Transition-metal Quintuple bond Quadruple bond Perturbation-theory Order Ligand Electronic-structure Chromium dimer Chemistry Ab-initio
    Abstract: Extended metal atom chains constitute an interesting class of molecules from both theoretical and applied points of view. In the chromium-based series Cr2M(dpa)4X2 (with M = Zn, Ni, Fe, Mn, Cr), the direct metal-metal interactions span a wide range of possibilities and so do their associated properties. The multiplicity and symmetry components of the metal-metal bond are herein analyzed via the effective bond order (EBO) concept using complete active space self-consistent field wave functions and compared with similar bimetallic Cr2L4X2 systems. The bond multiplicity follows a trend dominated by the Cr-Cr distance which, in turn, depends on the nature of the axial ligand (X). Cr2M compounds present asymmetric structures with virtually no interaction between the Cr2 unit and M, whereas fully symmetric structures with delocalized bonding among the three metals are also possible in Cr3 complexes. In such cases, a strategy that involves localization of the molecular orbitals into each Cr-Cr pair is applied to quantify the contribution of each pair to the overall metal-metal bond multiplicity.
    Thematic Areas: Química Physics, atomic, molecular & chemical Physical and theoretical chemistry Odontología Medicine (miscellaneous) Medicina ii Medicina i Materiais Interdisciplinar Geociências General medicine Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, physical Biotecnología Biodiversidade Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 15205215
    Author's mail: coen.degraaf@urv.cat javier.lopez@urv.cat
    Author identifier: 0000-0001-8114-6658 0000-0003-0322-6796
    Record's date: 2023-02-22
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://pubs.acs.org/doi/10.1021/acs.jpca.8b10124
    Papper original source: Journal Of Physical Chemistry a. 123 (8): 1538-1547
    APA: Spivak M, López X, de Graaf C (2019). Trends in the Bond Multiplicity of Cr2, Cr3, and Cr2M (M = Zn, Ni, Fe, Mn) Complexes Extracted from Multiconfigurational Wave Functions. Journal Of Physical Chemistry a, 123(8), 1538-1547. DOI: 10.1021/acs.jpca.8b10124
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.1021/acs.jpca.8b10124
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2019
    Publication Type: Journal Publications
  • Keywords:

    Chemistry, Physical,Medicine (Miscellaneous),Physical and Theoretical Chemistry,Physics, Atomic, Molecular & Chemical
    Transition-metal
    Quintuple bond
    Quadruple bond
    Perturbation-theory
    Order
    Ligand
    Electronic-structure
    Chromium dimer
    Chemistry
    Ab-initio
    Química
    Physics, atomic, molecular & chemical
    Physical and theoretical chemistry
    Odontología
    Medicine (miscellaneous)
    Medicina ii
    Medicina i
    Materiais
    Interdisciplinar
    Geociências
    General medicine
    Farmacia
    Ensino
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Chemistry, physical
    Biotecnología
    Biodiversidade
    Astronomia / física
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