Issue 24, 2001
From the journal:

Journal of the Chemical Society, Dalton Transactions

Tl(i) complexes of cymantrene-based tris(1-pyrazolyl)borates: polymers and macrocycles

ShengLi Guo,a   Jan W. Bats,b   Michael Bolteb  and  Matthias Wagner*a  

* Corresponding authors

a Institut für Anorganische Chemie, J.W. Goethe-Universität Frankfurt, Marie-Curie-Str. 11, D-60439 Frankfurt (Main), Germany
E-mail: Matthias.Wagner@chemie.uni-frankfurt.de

b Institut für Organische Chemie, J.W. Goethe-Universität Frankfurt, Marie-Curie-Str. 11, D-60439 Frankfurt (Main), Germany

Abstract

Cymantrene-based tris(1-pyrazolyl)borates have been synthesised from the reaction of CymBBr2 and Cym′BBr2 with pyrazole (Hpz) in the presence of triethylamine [Cym: cymantrenyl; Cym′: (methyl)cymantrenyl]. The Tl(I) salts CymB(pz)3Tl, 2a, and Cym′B(pz)3Tl, 2b, have been structurally characterised by X-ray crystallography. Similar to the corresponding complex FcB(pz)3Tl (Fc: ferrocenyl), CymB(pz)3Tl features a polymeric structure with bridging [B(pz)3] fragments in the solid state. Cym′B(pz)3Tl shows a related oligomeric structure. This time a macrocyclic tetramer rather than a linear chain is observed. To provide a ligand of high solubility in non-polar solvents, compound Cym′B(pz4-R)3Tl, [R = CH2(C6H11)] 2d, has been synthesised, which shows a reduced symmetry at the organometallic moiety, together with (cyclohexyl)methyl substituents in the 4-positions of all pyrazolyl rings.

Graphical abstract: Tl(i) complexes of cymantrene-based tris(1-pyrazolyl)borates: polymers and macrocycles

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Article information

DOI
https://doi.org/10.1039/B105692C
Article type
Paper
Submitted
28 Jun 2001
Accepted
04 Oct 2001
First published
22 Nov 2001

J. Chem. Soc., Dalton Trans., 2001, 3572-3576

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Tl(I) complexes of cymantrene-based tris(1-pyrazolyl)borates: polymers and macrocycles

S. Guo, J. W. Bats, M. Bolte and M. Wagner, J. Chem. Soc., Dalton Trans., 2001, 3572 DOI: 10.1039/B105692C

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