Organometallic hydrides as reactants in fullerene chemistry. Interaction of the fullerenes C60 and C70 with HM(CO)(PPh3)3 (MRh and Ir) and HIr(C8H12)(PPh3)2

Fullerene hydrides: synthesis, properties, and structure

“…142 It has been shown 143 that in the absence of oxygen in the dark and on irradiation, the interaction of C 60 with H 3 Ir(PPh 3 ) 3 leads to different products: to the complexes of iridium with Z 2 -coordinated C 60 on heating in toluene (100 8C) and to the oxidation of iridium by the triplet-excited C 60 (Nd 3+ : YAG laser, l = 532 nm) on irradiation in benzonitrile. The photochemical reaction in benzonitrile leads to the appearance of an absorption band in the near IR and of an EPR signal for the C 60 radical-anion (l = 1078 nm, g = 2.0001).…”

Advances in fullerene chemistry

“…54 It was shown that η 2 palladation of C 70 Pd followed by loss of one phosphine ligand were studied. 55 A cyclooctadiene complex of iridium similarly reacts with C 60 to give (η 2 C 60 )IrH(C 8 H 12 )(PPh 3 ). It should be em phasized that the M-H bond is not involved in these reactions with fullerenes in contrast to reactions of con ventional olefins.…”

Transition Metal Complex Formation

“…Some of these complexation reactions are more or less reversible. In fact metal clusters, not single metal atoms, bind to C 60 such that the metals are η 2 -bound to adjacent bonds of a C 6 face (Section 7.3).The binding of C 60 to transition metals in a η 2 -fashion becomes clearly evident by the formation of various complexes [9] (Scheme 7.1) of platinum, palladium and nickel [1-3, 10-16], iridium, cobalt and rhodium [9,[17][18][19][20][21][22][23][24][25][26][27][28][29][30] iron, ruthenium and osmium [25,31,32], manganese [29,33], titanium [34], rhenium and tantalum [25,29] and molybdenum and tungsten [35][36][37][38][39][40][41][42][43][44]. Packing effects in the solidstate structure can also play an important role for the exclusive formation of a specific regioisomer.…”