Synthesis and X-ray crystal structure of oxotrimesityliridium(V)

Oxidative Group Transfer to Co(I) Affords a Terminal Co(III) Imido Complex

“…12,13 In a related reaction, we canvassed the ability of 3 to intercept a diphenylcarbene unit from Ph 2 CN 2 . Rather than undergoing carbene transfer and concomitant expulsion of N 2 , we found that 2 equiv of Ph 2 CN 2 reacted with 3 to generate the phosphazine Me 3 P(N 2 CPh 2 ) and the thermally stable diazoalkane adduct complex, [PhBP 3 ]Co(N 2 CPh 2 ) (6). Terminal diazoalkane adducts of group 9 metals are very rare; 14a,b the single cobalt diazoalkane derivative previously reported exhibits side-on η 2 -coordination.…”

Trapping of an NiII Sulfide by a CoI Fulvene Complex

“…1 This class of compounds tend to be highly reactive, [2][3][4] and as a result, only a few well characterized late metal terminal chalcogenides are known, including [Ir (PCN = C 6 H 3 [CH 2 P(tBu) 2 ](CH 2 CH 2 NMe 2 )). 5,6 A number of late transition metal carbene (CR 2 2-), nitrene (NR 2-), nitride (N 3-), and phosphinidene (PR 2-) complexes have also been reported in recent years. [7][8][9][10][11][12][13][14][15][16][17][18] While a few of these complexes have been isolated, they tend to be extremely reactive, and often can only be observed spectroscopically.…”

Platinum‐Containing Polyoxometalates

“…We use the adverb "importantly" because terminal oxo compounds of the late-transition-metal elements, including Pt, were unknown prior to the recent research despite many attempts since the 1960s to produce them. [5,[12][13][14] Furthermore, terminal metal oxo species exhibit the only multiple noble-metal-oxygen bonds and such species should not exist based on electronic structure arguments. [5,13,14] [11] (cited as reference [12] in reference [1]) the (guanidinium) 8 ({SiW 11 }).…”

“…[5,[12][13][14] Furthermore, terminal metal oxo species exhibit the only multiple noble-metal-oxygen bonds and such species should not exist based on electronic structure arguments. [5,13,14] [11] (cited as reference [12] in reference [1]) the (guanidinium) 8 ({SiW 11 }). First, the infrared spectra of the crystalline guanidinium salts of {SiPt 2 W 10 } prepared using the exact published procedure of Lee et al, [11] and {SiW 11 } are identical (Figure 1 a).…”

“…Sect. C. [11] In (a) the gray line is authentic (guanidinium) 8 [SiW 11 O 39 ]; in (b) the gray line is authentic (guanidinium) 4 [SiW 12 O 40 ] as prepared by literature methods. [16] [11] results in a very weakly colored compound; whereas, the platinum oxo polytungstate, [ , is darkly colored as mandated by the electronic transitions in such a complex.…”