3 19 mmol the title compound os bppz 2 pph 2 me 2 was obtained as dark red crystalline solid 393 mg 0 40 mmol yield 60 spectral data ms fab 192 os m z 992 m 792 m u2212 pph 2 me 607 m u2212 2pph 2 me 1 h nmr 400 mhz cdcl 3 u03b4 10 41 br 2h 7 22 d 4h j hh 7 2 hz 7 08 dd 4h j hh 7 4 7 6 hz 7 00 u02dc 6 97 m 6h 6 87 d 2h j hh 7 6 hz 6 80 dd 2h j hh 7 6 7 4 hz 6 57 u02dc 6 50 m 6h 6 13 br 2h 1 60 s 18h 1 02 br 6h anal calcd for c 50 h 54 n 6 osp 2 c 60 59 n 8 48 h 5 49 found c 60 41 n 8 57 h 5 60 the procedures of example 5 were followed starting from 3 phenyl 5 2 pyridyl pyrazole pppzh 307 mg 1 39 mmol powdery os 3 co 12 200 mg 0 22 mmol freshly sublimed me 3 no 125 mg 1 61 mmol and the phosphine pph 2 me 600 u03bcl 3 20 mmol the title compound os pppz 2 pph 2 me 2 was obtained as dark red crystalline solid 375 mg 0 36 mmol in 54 yield analytical data ms fab 192 os m z 1032 m 831 m u2212 pph 2 me 631 m u2212 2pph 2 me anal calcd for c 54 h 46 n 6 osp 2 c 62 90 n 8 15 h 4 50 found c 62 65 n 8.