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High-Spin Polycations of a Trlaminobenzene

 

作者: KurtR. Stickley,   SilasC. Blackstock,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  (Taylor Available online 1995)
卷期: Volume 272, issue 1  

页码: 81-85

 

ISSN:1058-725X

 

年代: 1995

 

DOI:10.1080/10587259508055275

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Organic poly radical ions are molecular spin units which could be used in the construction of magnetic materials. They possess the feature of redox activation / deactivation, a potential means of reversibly controlling the molecular spin state of the unit, thus imparting a magnetic switch function. Here, we describe the prospect of preparing tris arylamines suitably structured to yield long-lived cation, dication, and trication states of successively higher spin mutiplicity. The preparation and oxidation of N,N,N′,N′,N″,N″-hexa-p-anisyl-1,3,5-triaminobenzene (HATAB) are discussed, along with the ESR spectra of the HATAB higher oxidation states. The HATAB2+and HATAB3+ESR signals are assigned to triplet and quartet states respectively which, on the basis of cursory Curie-Weiss data, are tentatively assigned as the ground states of these poly cations, consistent with calculational results (AMI/UHF)on the unsubstituted system, 1,3,5-triaminobenzene dication and trication.

 

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