New transition-metal derivatives of the fullerene C60

Synthesis, Characterization and Properties of Transition Metal Pd/Pt [60]Fullerene Complexes Containing Phosphane Ligands − Crystal Structure of [Pd(η2‐C60){Ph2PCH2(CH2OCH2)2CH2PPh2}]

“…440 nm, indicating that the C 60 ligand is coordinated to Pd or Pt in an η 2 -mode in each of these complexes. [9] In addition, the 31 P NMR spectra of 6Ϫ8 show a singlet at about δ ϭ 16 ppm for the two identical P atoms in each of 6Ϫ8, whereas the spectra of 9Ϫ11 exhibit a singlet at about δ ϭ 18 ppm, along with two satellite singlets due to 195 Pt-31 P coupling, attributed to the two identical P atoms in each of 9Ϫ11.…”

“…440 nm suggests that the C 60 ligand is coordinated to palladium in an η 2 -fashion in each of the compounds. [9] The nonlinear optical properties of [60]fullerene and its derivatives are of considerable interest, largely because of their potential applications as optical limiting materials.…”

Synthesis, Characterization and Electrochemical Properties of Optically Active [60]Fullerene Organotransition Metal Complexes mer‐[(η2‐C60)M(CO)3{(−)‐DIOP}] (M = Mo, W), mer‐[(η2‐C60)M(CO)3{(+)‐DIOP}] (M = Mo, W) and [(η2‐C60)M{(−)‐DIOP}] (M = Pd, Pt) − Crystal Structure of [(η2‐C60)Pt{(−)‐DIOP}]

“…295 nm in the ultraviolet region, and a new band at 440 nm in the visible region. The former band can be attributed to the presence of phenyl groups in 5 and 6, and the latter to the η 2 -coordinating mode of C 60 [20] with Pd and Pt, in 5 and 6, respectively. The IR spectra of 5 and 6 show four absorption bands at 527, 576, 1184 and 1428 cm…”

“…In addition, the new band suggests that the C 60 ligands are coordinated to Mo and W atoms via an η 2 -coordination mode in 1Ϫ4. [20] CD spectroscopy is an important method for the characterization of chiral compounds. The CD spectra of 1Ϫ4 are shown in Figures 3 and 4, respectively.…”

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.…”