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Structure Determinations of Pentatetraenes—Comparison of the Structures of Cumulenes
Author(s) -
Irngartinger Hermann,
Götzmann Wolfgang
Publication year - 1986
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198603401
Subject(s) - cumulene , substituent , alternation (linguistics) , double bond , chemistry , computational chemistry , molecule , stereochemistry , polymer chemistry , organic chemistry , philosophy , linguistics
The number (n) of double bonds in a cumulene system has a very strong effect on the structure. For cumulenes with n = 3 and 5, both the alternation in the bond lengths and the substituent effects are larger than for allenes (n = 2) and cumulenes with n = 4. The structure analyses of 1a and 1b have now made possible the direct comparison of variously substituted pentatetraenes.