Synthesis of benzene ruthenium triazolato complexes by [3+2] cycloaddition reactions of activated alkynes and fumaronitrile to benzene ruthenium azido complexes
Author(s)
Date issued
2008
In
Inorg. Chim. Acta
Vol
11
No
361
From page
3294
To page
3300
Subjects
ruthenium benzene triazolato complex prepn crystal structure ruthenium acetylacetonato benzene triazolato complex prepn mol structure ruthenium acetylacetonato benzene triazolato complex alkyne activated cycloaddn reaction ruthenium azido benzene triazolato complex fumaronitrile cycloaddn reaction ruthenium azido benzene triazolato complex
Abstract
Dinuclear [(?6-C6H6)Ru(?-N3)Cl]2 (1) was obtained by the reaction of [(?6-C6H6)RuCl2]2 with Na azide in EtOH. The benzene Ru ?-diketonato complexes [(?6-C6H6)Ru(L?L)Cl] {L?L = O,O'-acac (2); O,O'-bzac, Hbzac = benzoylacetone (3); O,O'-dbzm, Hdbzm = dibenzoylmethane (4)} were obtained in MeOH by the reaction of [(?6-C6H6)RuCl2]2 with the corresponding ?-diketonates. These complexes further react with Na azide in EtOH to yield [(?6-C6H6)Ru(L?L)N3] [L?L = O,O'-acac (5); L?L = O,O'-bzac (6); L?L = O,O'-dbzm (7)]. The complexes 5-7 were obtained as well by treating 1 with Na salts of ?-diketonates. These neutral benzene Ru azido complexes undergo [3+2] dipolar cycloaddn. reaction with activated alkynes (MeO2CC?CCO2Me, EtO2CC?CCO2Et) or fumaronitrile (NCHC=CHCN) to yield the corresponding benzene Ru triazolato complexes; [(?6-C6H6)Ru(O,O'-acac){N3C2(CO2Me)2}] (8), [(?6-C6H6)Ru(O,O'-acac){N3C2(CO2Et)2}] (9), [(?6-C6H6)Ru(O,O'-acac){N3C2HCN}] (10), [(?6-C6H6)Ru(O,O'-bzac){N3C2HCN}] (11) and [(?6-C6H6)Ru(O,O'-dbzm){N3C2HCN}] (12). These complexes are fully characterized from microanalyses, FTIR and FT-NMR spectroscopy. The mol. structure of [(?6-C6H6)Ru(O,O'- acac){N3C2(CO2C2H5)2}] (9) is confirmed by single crystal x-ray diffraction study. [on SciFinder(R)]
Publication type
journal article