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- W2077779512 abstract "The product of the reaction of [RuCl2(PPh3)3] with two equivalents of pyrazole (Hpz) in toluene, when precipitated from a toluene/hexane mixture was characterised as [RuCl2(Hpz)2(PPh3)2] · ½C6H14 (1); the same reaction, effected in acetone, produced the acetone coordinated species [RuCl2(Hpz)(Me2CO)(PPh3)2] (2). When the reaction was carried out using 3,5-dimethylpyrazole (HDMpz), in either acetone or toluene as solvent, the yellow five-coordinate complex [RuCl2(HDMpz)(PPh3)2] (3) was produced. The bromo compounds [RuBr2(Hpz)2(PPh3)2] · ½C6H14 (4) and [RuBr2(HDMpz)(PPh3)2] (5) have also been prepared using [RuBr2(PPh3)3] as precursor. Attempts to make the iodo analogues from [RuI2(PPh3)2]n, resulted in a species identified as [RuI2(HDMpz)(PPh3)2] on the basis of NMR and infrared measurements. The novel derivatives (1)–(5) have been characterised using microanalyses and infrared, 1H and 31P NMR spectroscopy. Reaction of (1) with CO resulted in displacement of Hpz to eventually produce cis-[RuCl2(CO)2(PPh3)2]. The reaction appeared to proceed through the a monosubstituted product [RuCl2(CO)(Hpz)(PPh3)2], distinguished from spectroscopic measurements. The reaction of (1) with oxygen is discussed." @default.
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- W2077779512 date "2001-04-30" @default.
- W2077779512 modified "2023-09-27" @default.
- W2077779512 title "SYNTHESIS AND CHARACTERIZATION OF RUTHENIUM(II) PYRAZOLE TERTIARY PHOSPHINE COMPLEXES" @default.
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- W2077779512 doi "https://doi.org/10.1081/sim-100104791" @default.
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