Issue 15, 2000
From the journal:

Journal of the Chemical Society, Dalton Transactions

Synthesis and characterization of ruthenium quinolin-8-olate complexes. Unexpected formation of a κ1-hydrotris(pyrazolyl)borate complex

Christian Gemel,a   Roland John,a   Christian Slugovc,a   Kurt Mereiter,b   Roland Schmida  and  Karl Kirchner*a  

* Corresponding authors

a Institute of Inorganic Chemistry, Vienna University of Technology, Getreidemarkt 9, Vienna, Austria
E-mail: kkirch@mail.zserv.tuwien.ac.at

b Institute of Mineralogy, Crystallography, and Structural Chemistry, Vienna University of Technology, Getreidemarkt 9, Vienna, Austria

Abstract

The complex [Ru(η6-p-MeC6H4Pri)Cl2]2 reacted with K[quin] (quin = quinolin-8-olate) to yield the half-sandwich complex Ru(η6-p-MeC6H4Pri)(quin)Cl 1. Chloride abstraction from 1 with AgCF3SO3 affords the neutral complex Ru(η6-p-MeC6H4Pri)(quin)(κ1O-CF3SO3). The lability of the CF3SO3− ligand in 2 is apparent by the reaction with CH3CN giving [Ru(η6-p-MeC6H4Pri)(quin)(CH3CN)]CF3SO33. Refluxing RuTp(COD)Cl in the presence of K[quin] resulted in the formation of Ru(COD)(quin)24 containing no Tp ligand; 4 has also been obtained in good yield by treating [Ru(COD)Cl2]n with K[quin] in boiling methanol. Treatment of either 1 or 3 with 1 equivalent of KTp resulted in the formation of the unusual complex Ru(η6-p-MeC6H4Pri)(quin)(κ1N-Tp) (5) featuring a κ1-co-ordinated Tp ligand. However, if 1 is treated with KTp in the presence of AgCF3SO3 the cationic complex [Ru(η6-p-MeC6H4Pri)(quin)(κ1-Hpz)]CF3SO36 is obtained containing a pyrazole ligand as a result of B–N bond cleavage. Complexes 1, 4, 5, and 6 have been characterized by X-ray crystallography.

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Article information

DOI
https://doi.org/10.1039/B002490M
Article type
Paper
Submitted
29 Mar 2000
Accepted
15 Jun 2000
First published
11 Jul 2000

J. Chem. Soc., Dalton Trans., 2000, 2607-2612

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Synthesis and characterization of ruthenium quinolin-8-olate complexes. Unexpected formation of a κ1-hydrotris(pyrazolyl)borate complex

C. Gemel, R. John, C. Slugovc, K. Mereiter, R. Schmid and K. Kirchner, J. Chem. Soc., Dalton Trans., 2000, 2607 DOI: 10.1039/B002490M

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