π-Complex Intermediates in Homogeneous and Heterogeneous Catalytic Exchange Reactions of Hydrocarbons and Derivatives with Metals

Autor:	J. L. Garnett
Rok vydání:	1972
Předmět:	chemistry.chemical_classification Hydrogen exchange Hydrogen Chemistry Process Chemistry and Technology chemistry.chemical_element General Chemistry Photochemistry Catalysis Transition metal Homogeneous Polycyclic Hydrocarbons Platinum Alkyl
Zdroj:	Catalysis Reviews. 5:229-267
ISSN:	1520-5703 0161-4940
DOI:	10.1080/01614947208076869
Popis:	The exchange of unsaturated and aromatic hydrocarbons and their derivatives with isotopic hydrogen on group VIII transition metals has been reviewed. Both classical and π-complex heterogeneous mechanisms proposed to account for the observed behavior have been compared. Evidence to distinguish between the application of the heterogeneous associative and dissociative π-complex exchange mechanisms is discussed. The recently discovered homogeneous equivalent of the above heterogeneous reactions is described in detail. Homogeneous associative and dissociative π-complex mechanisms are proposed to explain aromatic hydrogen exchange. Mechanisms are also proposed to explain the pattern of exchange observed homogeneously with platinum in the alkyl groups of alkyl aromatics. Possible mechanistic relationships between heterogeneous and homogeneous systems are considered using as representative unsaturated and aromatic series, the polycyclic hydrocarbons, the monohalogenated benzenes, the alkyl benzenes (and ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e938f8a13281cf752b7cde91ea5edd3 https://doi.org/10.1080/01614947208076869 Zobrazit plný text záznamu