Letter | Published:

Crystal Structure of 2-Phenylazulene

Nature volume 192, pages 863864 (02 December 1961) | Download Citation

Subjects

Abstract

AFTER a long controversy, the space group of azulene is now apparently established as the centro-symmetrie P21/a, with two non-centro-symmetric molecules in the unit cell1,2, a result which leads to a disordered structure in which successive azulene molecules in the crystal are reversed in direction at random. Two previously observed cases of random positioning, namely, between chlorine and bromine in p-chlorobromobenzene3 and between methyl and chlorine in 2-amino-4-methyl-6-chloropyrimidine4, involve atoms or groups of comparable size, and are not as surprising as is the case of azulene, where there is a rather large difference in size between the five- and seven-membered rings.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1.

    , , , and , Nature, 182, 177 (1958).

  2. 2.

    , Acta Cryst., 13, 850 (1960).

  3. 3.

    , Nature, 160, 570 (1947).

  4. 4.

    , and , Acta Cryst., 1, 4 (1948).

Download references

Author information

Affiliations

  1. Chemistry Department, University of Southern California, Los Angeles, 7.

    • B. D. SHARMA
    •  & J. DONOHUE

Authors

  1. Search for B. D. SHARMA in:

  2. Search for J. DONOHUE in:

About this article

Publication history

Published

DOI

https://doi.org/10.1038/192863a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.