Conversion of .eta.4,.eta.6-bis(arene)ruthenium(0) complexes to cyclohexadienyl analogs of ruthenocene

Bis(triphenyl-λ5-phosphanylidene)ammonium hydrogen dichloride

“…For selected examples containing the [Cl-H-Cl] À anion, see: Atwood et al (1990); Mootz et al (1981); Habtemariam et al (2001); Swann et al (1984); Neumü ller et al (2005). For other bis(triphenyl-5 -phosphanylidene)ammonium halide structures, see: Knapp & Uzun (2010a,b); Beckett et al (2010).…”

Complexes of Ruthenium and Osmium Containing η2–η6 Hydrocarbon Ligands: (iii) Complexes Containing Six-, Seven- and Eight-membered Rings

“…When this reaction is carried out in the presence of NH 4 PF 6 , the product is the r| 5 -cyclohexadienyl complex (17) formed by nucleophilic addition of PMe 3 to the benzene ring. Similar complexes (18) and (19) are formed by reaction of PMe 3 with [RuCl 2 (PR 3 )(r|-C 6 H 6 )] and complex (20) 6 ; the PMe 2 Ph complex readily loses C 6 Me 6 in solution, probably owing to steric crowding. 83 The coordinated benzene in [Ru(PMe 3 ) 3 (r|-C 6 H 6 )](PF 6 ) 2 undergoes nucleophilic attack by Et 3 N and by MeLi to give [Ru(PMe 3 ) 3 (r| 5 -C 6 H 6 Nu)] w+ (Nu = Et 3 N, n -2; Nu = Me, n = 1); in the first case, the reaction is reversed by acid.…”

“…18 Double ejto-addition of H~ to the C 6 Me 6 ring of dication (8) by means of Red-Al gives, unexpectedly, the hexamethylcyclohexa-1,4-diene complex (12), 27 whereas prolonged reaction with NaBH 4 gives a mixture of this and its more stable, cyclohexa-1,3-diene isomer (13) (Scheme S). 36^7 Protonation of the latter with HBF 4 gives an agostic, fluxional r| 3 -cyclohexenyl cation (14) whose NMR behaviour resembles that of the protonation products of other [Ru(T|-arene)(r|-l,3-diene)] complexes (see Section 9.2.8).…”

The Synthesis and Properties of Face-to-Face Metallocene Polymers

“…'H NMR data were obtained at 300 MHz and 13C NMR data were obtained at 75 MHz on a Varian XL-300 MHz FTNMR spectrometer. Bulk magnetic susceptibility measurements were obtained on a 0024-9297/95/2228-6330$09.00/0 © 1995 American Chemical Society l-G'-Cyclopentadienyl and 2'-cyclopentadienyl)-8-iodonaphthalene (4). A flame-dried 100-mL Schlenk flask was charged with a copper® bromide-dimethyl sulfide complex (819 mg, 3.98 mmol).…”

“…Mp 130 °C (dec). XH NMR (CDCla): <5 2.78-2.85 (m, 4H, CpCH2), 3.81 (t, 4H, J = 1.8 Hz, 3,4-CpH), 4.01 (t, 4H, J = 1.8 Hz, 2,5-CpH), 5.90-6.20 (m, 6H, vinyl), 7.18 (dd, 2H, J = 7.9, 7.1 Hz, H3), 7. (dd, 2H, J = 7.1, 1.5 Hz, H7), 7.39 (dd, 2H, J = 7.9, 7.1 Hz, He), 7.68 (dd, 2H, J = 7.9, 1.5 Hz, H5), 7.74 (dd, 2H, J = 7.9, 1.5 Hz, H4), 7.82 (dd, 2H, J = 7.1, 1.5 Hz, H2).…”