ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 32 (1993), S. 789-805 
    ISSN: 0570-0833
    Keywords: Coordination modes ; σ Complexes ; Metathesis ; X-H activation ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The first σ complexes were found in the 1960s and 1970s, but they did not attract more than passing attention. Only now are we beginning to recognize their key role in the chemical reactions of σ bonds, and this has encouraged more detailed study. In contrast with the more familiar π-donor complexes such as M—(CH2=CH2) and complexes like M—NH3, in which the one pair of electrons on the N atom is bound to the metal atom, in a σ complex an X—H group binds to the transition metal atom; the X—H σ-bonding electron pair acts as a 2e donor to give an (X-H)-M type complex. Dihydrogen complexes (X = H) are one important group of σ complexes. C-H-M complexes (X = R3C) with an agostic C-H-M interaction have not only been found in the ground state but also implicated in the transition states of many important organometallic transformations such as Ziegler-Natta catalysis and sigma bond metathesis. The importance of X—H bond activation will encourage continued growth in this field.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...