Synthesis and structural characterization of (η 5 -Dp)Ru(PPh 3 ) 2 H (Dp = C 8 H 9 − , 1,2-dihydropentalenyl)

(η 5 -Dp)Ru(PPh 3 ) 2 H (Dp = C 8 H 9 − , 1,2-dihydropentalenyl) was synthesized in 90% yield by reaction of (η 5 -Dp)Ru(PPh 3 ) 2 Cl with sodium formate. (η 5 -Dp)Ru(PPh 3 ) 2 H was characterized by 1 H and 31 P NMR spectroscopy and IR spectroscopy. The Ru–H appears in the 1 H NMR spectrum upfield at −11.6 ppm, indicative of a metal hydride. In the IR spectrum, the ν Ru–H was observed at 1920 cm −1 . The solid-state structure of (η 5 -Dp)Ru(PPh 3 ) 2 H ( 1 ) was determined by X-ray crystallography. Compound 1 has similar structural parameters to (η 5 -Cp)Ru(PPh 3 ) 2 H and (η 5 -Ind)Ru(PPh 3 ) 2 H.