Imido complexes structure

The monomeric terminal imido complexes cp IrNR (R = tBu, SiMe2 Bu, 2,6-Me2C6H3, 2,6-1Pr2C6H3) were prepared from [cp IrCl2]2 and four equivalents of LiNHR in THF.104 All four product species were structurally characterized by X-ray diffraction and exhibit short Ir—N distances (1.712(7)—1.759(3) A) and nearly linear Ir—N C (Si) angles. Some reactions of cp IrN Bu are highlighted in Reaction Scheme 9. Complexes (77) and (78) have been studied by single-crystal X-ray diffraction. 

C. Electronic Structure and Reactivity of Molybdenum Nitrido and Imido Complexes... 

Cyclopentadienylamine)scandium(2,3-dimethyl-l,3-butadiene) 7 was synthesized in good yield, as shown in Scheme 2. Complex 7 reacted with benzonitrile to form a /rz-imido complex 8, the structure of which was characterized by single crystal X-ray diffraction. This product 8 was proposed to be formed by nitrile insertion followed by an attack of another diene methylene group on the carbon atom of the imido intermediate.3 An unsaturated metal imido species was formed, which easily dimerized to produce 8. However, the yield of 8 was not reported. 

The Tc complex [TcI(N—Ar)s] (28) (see Section 5.2.2.1.2) can be reduced with Na° in THE to yield the green, nonbridged, dinuclear compound [Tc2(NAr)6] (46), in which three imido-ligands are bound to the Tc center and connected by a single bond to the second technetium. The molecule has a staggered, ethane-like structure and is diamagnetic. Reduction of (28) yields another homoleptic imido-complex of Tc, the imido-bridged, tetrahedral, dinuclear compound [Tc2(/u-NAr )2(NAr )4] (47) (Ar = 2,6-diisopropylphenyl). The conformation could be confirmed by X-ray structure analysis the assumption of a Tc Tc bond is confirmed by the... 

The complex (PPh4)[Os NC(CCl3)NCCl(CCl3) Cl5] may be regarded as an imido complex of osmium(VI), made by the reaction of OS2CI10 with trichloroacetonitrile and has been characterized by X-ray structural studies. The Os—N distance of 1.97 A is slightly shorter than that expected for a single bond. 

The tetranuclear osmium(VI) oxo imido complex [(Bu N)20s(/u-NBu )20s(NBu )(/u-0)]2 (2) is obtained as a side product in the reaction of [OSO4] with neat NHBu (SiMe3) (Scheme 1). Its structure can be described as a dimer of dimers with Cjh symmetry. ... 

The lone structurally characterized imido complex is MoO(NH)Cl2(OPEtPh2)2.270 Here the oxo and imido ligands are cis to each other with Mo—0=1.66 and Mo—N = 1.70A, respectively. The N—H hydrogen has been located and the Mo—N—H angle is 157°. The orange-yellow complex was prepared by the reaction of MoOCl3 with Me3SiN3 followed by the addition of the tertiary phosphine oxide.270... 

Group 4, surface chemistry on oxides, 12, 515 Group 5, surface chemistry on oxides, 12, 524 molybdenum, surface chemistry on oxides, 12, 529 into nickel complexes, 8, 59-60 with palladium, GO insertion, 8, 200 tungsten, surface chemistry on oxides, 12, 531 on zinc compounds, 2, 366 Alkoxido-imido tungsten complexes structure and properties, 5, 754—755 synthesis, 5, 750/... 

Phosphine-imido tungsten complexes structure and properties, 5, 754—755 synthesis, 5, 749... 

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