tert ‐Butyl‐End‐Capped Polyynes: Crystallographic Evidence of Reduced Bond‐Length Alternation | Zendy

Chalifoux Wesley A. | Zendy; McDonald Robert | Zendy; Ferguson Michael J. | Zendy; Tykwinski Rik R. | Zendy

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tert ‐Butyl‐End‐Capped Polyynes: Crystallographic Evidence of Reduced Bond‐Length Alternation

Author(s) -

Chalifoux Wesley A.,

McDonald Robert,

Ferguson Michael J.,

Tykwinski Rik R.

Publication year - 2009

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200902760

Subject(s) - alternation (linguistics) , bond length , crystallography , chemistry , materials science , crystal structure , linguistics , philosophy

Cumulene or polyyne? The synthesis and X‐ray crystallographic analysis of a series of polyynes up to 20 C sp atoms in length and end‐capped with tert ‐butyl groups has been achieved. The structural data show a distinct reduction in the bond‐length alternation as a function of the polyyne length, but this trend appears to saturate before a cumulenic‐like structure is achieved.

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