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Volumn 108, Issue 12, 2010, Pages 1619-1640

A theoretical investigation of the oxidation states of palladium complexes and their role in the carbonylation reaction

Author keywords

ab initio; computational chemistry; electronic structure; quantum chemistry

Indexed keywords

CARBONYLATION; CHLORINE; CHLORINE COMPOUNDS; COMPLEXATION; COMPUTATIONAL CHEMISTRY; COORDINATION REACTIONS; ELECTRONIC PROPERTIES; ELECTRONIC STRUCTURE; MOLECULES; PALLADIUM; PHOSPHORUS; PHOSPHORUS COMPOUNDS; QUANTUM CHEMISTRY; QUANTUM THEORY; SEMICONDUCTING INDIUM GALLIUM ARSENIDE; SPHERES;

EID: 84962467325     PISSN: 00268976     EISSN: 13623028     Source Type: Journal    
DOI: 10.1080/00268976.2010.486139     Document Type: Article
Times cited : (5)

References (102)
  • 6
    • 0035498330 scopus 로고    scopus 로고
    • references 13k, q, s, 14b, 20f and 49 therein
    • G. Kiss, Chem. Rev. 101, 3435 (2001): references 13k, q, s, 14b, 20f and 49 therein.
    • (2001) Chem. Rev. , vol.101 , pp. 3435
    • Kiss, G.1
  • 36
    • 0035498330 scopus 로고    scopus 로고
    • G. Kiss, Chem. Rev. 101, 3435 (2001).
    • (2001) Chem. Rev. , vol.101 , pp. 3435
    • Kiss, G.1
  • 102
    • 84962478268 scopus 로고    scopus 로고
    • note
    • In order to verify the hypothesis that the reaction follows a pathway involving ionic species [11], we carried out PCM calculations on the two following systems: (a) PPh3(OAc)2+Pd(PPh3)2 (M7) and the alternative charged system (b) PPh3(OAc)(+)+ Pd(PPh3)2(OAc)(-) which would form in the case of an ionic pathway. The solvent emulated by the PCM calculations was nitromethane (=38.2). The computational results show that system (a) is 29.6 kcal mol-1 more stable than system (b). Also, we compared, in the same medium, the relative stability of PPh3(OAc)2 and PPh3(OAc)++(OAc)-. Even in this case the neutral system turns out to be more stable (by 6.4 kcal mol-1) than the charged system. These computational findings suggest that, at least for the present model, the mechanism proposed in our study seems to be favoured with respect to a reaction pathway involving ionic species. However, it is possible, even if unlikely if we consider the significant energy difference between systems (a) and (b), that the approximations of an implicit solvent model (such as PCM) affect this conclusion and that the employment of a larger model system (possibly with an explicit solvent description) may lead to different results.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.