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Unexpected formation of [Ru(η5-C5H5)(PH{CH2N(CH2CH2)2O}2)(PPh3)2]BF4 -
the first „piano-stool” ruthenium complex bearing secondary aminomethylphosphane ligand
Michał Płotek,a,b Radosław Starosta,c* Urszula K. Komarnicka,c Agnieszka Skórska-Stania,a Grażyna Stochel,a Agnieszka Kyzioła* and Małgorzata Jeżowska-Bojczukc
a Faculty of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Polandb Faculty of Conservation and Restoration of Works of Art, Jan Matejko Academy of Fine Arts in Krakow, Lea 27-29, 30-052 Krakow, Polandc Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14, 50-383 Wroclaw, Poland* corresponding authors: AK - [email protected]; RS- [email protected]
In this paper we report the reaction of [Ru(η5-C5H5)Cl(PPh3)2] with P{CH2N(CH2CH2)2O}3 in the presence of NaBF4, in which apart from the Clˉ substitution, an unexpected P-C bond cleavage in the tertiary phosphane is observed. It results in formation of the [Ru(η5-C5H5)(PH{CH2N(CH2CH2)2O}2)(PPh3)2]BF4 (1) – the first “piano-stool” ruthenium complex with secondary aminomethylphosphane ligand.
Fig. S1 Structure of complex 1 with atom numbering scheme.
Fig. S2 Comparison of the 31P and 31P{1H} NMR spectra (CDCl3, 300 K) of complex 1.
Table S1. Comparison of NMR data for complex 1, PPh3 and starting reagents: [Ru(η5-C5H5)Cl(PPh3)2], P(CH2-morph)3.P(CH2-morph)3 PPh3 [Ru(η5-C5H5)Cl(PPh3)2] 1
Atomic number σ [ppm] multiplicity J [Hz] σ [ppm] multiplicity