2012
DOI: 10.1039/c2cc35304k
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The occurrence and representation of three-centre two-electron bonds in covalent inorganic compounds

Abstract: Although compounds that feature 3-centre 2-electron (3c-2e) bonds are well known, there has been no previous effort to classify the interactions according to the number of electrons that each atom contributes to the bond, in a manner analogous to the classification of 2-centre 2-electron (2c-2e) bonds as either normal covalent or dative covalent. This article provides an extension to the Covalent Bond Classification (CBC) method by categorizing 3c-2e interactions according to whether (i) the two electrons are … Show more

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Cited by 251 publications
(248 citation statements)
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“…Some excellent reviews and book chapters have focused on this topic, 143 some considering the metal-metal bonding of the bridging methyl compounds and the nature of the bridging ligands as threecentre two-electron bonds. 9,144 A search in the Cambridge Structural Database for bimetallic transition metal complexes with bridging methyl ligands produced only 75 results, a very small number compared to the more than five thousand entries retrieved for metal methyl (TM-CH3) compounds. Most compounds feature early transition metals, for example, there are at least 19 di-yttrium species, 7 compound containing scandium and with 11 zirconium, whereas there are no examples with silver and only one example with gold which has already been described.…”
Section: Bridging Methyl Complexes Of Transition Metal Threecenter Tmentioning
confidence: 99%
See 1 more Smart Citation
“…Some excellent reviews and book chapters have focused on this topic, 143 some considering the metal-metal bonding of the bridging methyl compounds and the nature of the bridging ligands as threecentre two-electron bonds. 9,144 A search in the Cambridge Structural Database for bimetallic transition metal complexes with bridging methyl ligands produced only 75 results, a very small number compared to the more than five thousand entries retrieved for metal methyl (TM-CH3) compounds. Most compounds feature early transition metals, for example, there are at least 19 di-yttrium species, 7 compound containing scandium and with 11 zirconium, whereas there are no examples with silver and only one example with gold which has already been described.…”
Section: Bridging Methyl Complexes Of Transition Metal Threecenter Tmentioning
confidence: 99%
“…8b-h Relevant theoretical and structural aspects have also been highlighted within severalhomobimetallic species with bridging methyl ligands synthesized recently. 9,10 Aside from main group methyl compounds, including LiMe, Mg(Me)X, ZnMe2, or AlMe3, of great fundamental and practical relevance, [1][2][3][4][5][6] methyl complexes of transition metals can be arguably considered the most important family of compounds with σ-M-C bonds. 7 They have led to major breakthroughs in organometallic chemistry, from the isolation of the first methylidene complex 11 to the low temperature characterization of the first σ-CH4 complex.…”
Section: Introductionmentioning
confidence: 99%
“…Thebonding in anti-3C + resembles anti-2C + ( Figure S8) with slightly less bond order caused by the steric and electronic effects.C alculations indicate an absence of Co-Co bond in trans-3C + ( Figure S9) despite spin density is largely localized on two cobalt atoms. [16] We have described the isolation, characterization and crystal structures of ac lass of dicobalt metalloradicals (1C…”
Section: Anti-3cmentioning
confidence: 99%
“…En este sentido, este estudio propone el mentefacto como una didáctica de enseñanza en clases que permita integrar el concepto de valencia secundaria al concepto tradicionalmente enseñado. Algunas investigaciones ya se han realizado vinculado instrumentos didácticos para la enseñanza de conceptos de la ciencias básicas (Carneiro y Dal Farra, 2011;Latasaet al, 2012;Lorenzo et al, 2011) y, particularmente, en la enseñanza de la química (Green et al, 2012;Simõeset al, 2013;Vega et al, 2014;Green y Parkin, 2014).…”
Section: Introductionunclassified