Issue 2, 2007
From the journal:

CrystEngComm

Conformational morphosis in azocalix[4]arenes

Har Mohindra Chawla,*a   Geeta Hundal,*b   Suneel Pratap Singha  and  Shailesh Upretia  

* Corresponding authors

a Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi, India
E-mail: hmchawla@ chemistry.iitd.ernet.in
Fax: +91-11-26591502
Tel: +91-11-26591517

b Department of Chemistry, Guru Nanak Dev University, Amritsar, India

Abstract

The first example of cesium induced chemical morphosis of new azocalix[4]arene 2 is described. It has been observed that pyridylazocalix[4]arene 2a selectively reacts with cesium ion to yield a new polymorph 2b. The synthesized polymorphs (2a and 2b) have similar gross conformational structures which profoundly differ at supramolecular level to exhibit a ‘hand-shake’ arrangement with respect to pyridyl units or π–π interaction of phenolic units.

Graphical abstract: Conformational morphosis in azocalix[4]arenes

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Article information

DOI
https://doi.org/10.1039/B613841A
Article type
Communication
Submitted
22 Sep 2006
Accepted
30 Nov 2006
First published
13 Dec 2006

CrystEngComm, 2007,9, 119-122

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Conformational morphosis in azocalix[4]arenes

H. M. Chawla, G. Hundal, S. P. Singh and S. Upreti, CrystEngComm, 2007, 9, 119 DOI: 10.1039/B613841A

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