A series of heterocyclic metal carbene complexes were prepared by the deoxygenation reaction of M(CO) 6 (M ) Cr, Mo, W) with RNH(CH 2 ) n NdPPh 3 (R ) H, Et, Ph; n ) 2, 3, 4) to form the corresponding isocyanide complex, which subsequently underwent intramolecular cyclization to give (CO) 5 MdCN(R)(CH 2 ) n NH in good yields. None of the carbene complex reacted further with amine-phosphinimine RNH(CH 2 ) n NdPPh 3 to give the bis(carbene) complex. Deprotonation of the N-H of the carbene complex followed by the reaction of alkyl iodides provided the N-alkylated product. In the case of N-allyl-substituted complexes (CO) 5 MdCNR(CH 2 ) 2 N(CH 2 CHdCH 2 ) (M ) Cr, Mo, W), the carbon-carbon double bond underwent intramolecular ligand displacement of carbonyl ligand to yield the corresponding π-coordinated complex. Unlike the group VI metal carbonyl complexes, treatment of ReBr(CO) 5 with 2 molar equiv of Ph 3 PdN(CH 2 ) 2 NH 2 provided a bis(carbene) complex fac-(CO) 3 BrRe(dCNHCH 2 CH 2 NH) 2 . All complexes are characterized by both spectral and elemental analyses. Complexes (CO) 5 ModCNHCH 2 CH 2 CH 2 NH (18) and fac-(CO) 3 BrRe-(dCNHCH 2 CH 2 NH) 2 (42) were further characterized by X-ray single-crystal analysis.

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The incorporation of a phosphinimino moiety into phosphine ligands to form a new bidentate Ph3P=N(CH&PPh2 (1) is reported. Compound 1 can act as a a-N and a-P donor ligand or react with metal carbonyls to form isocyanide complexes. Complexes of (COkM-(1-PJV) [M = Mo (2), W (3)l were prepared from the reaction of Et4N[M(C0)5Brl with 1 in refluxing THF solution, whereas the isocyanide complexes of (C0)5MCN(CH2)3PPh2 [M = Cr (4), Mo (5), W (6)] are obtained from the reaction of M(CO)6 with 1 at 25 "C. The deoxygenation nature is also shown in the reaction of CpFe(C0)21, CpRu(C0)21, Re(CO)sBr, and R e ~( C 0 ) ~o with 1 to form the corresponding isocyanide complexes [CpFe(CO){ CN(CHd3-PPhz-CQ}]I (71, C~RU(CO)I{CN(CHZ)~PP~Z-C) (lo), BrRe(CO),-,{ CN(CH2)3PPhz-C}, [n = 1 (12), 2 (14)], and R ~~( C O ) S { C N ( C H ~) ~P P ~~-C }(15), respectively. The free phosphine of 10 underwent exchange with one triphenylphosphine ligand in CpRu(PPh3)sCl to yield the binuclear species [CpRu(PPhs)Cl{ P(Ph2)(CH2)3NC}Ru(CO)CpI](l l), whereas intramolecular ligand substitution occurred in both 12 and 15 to give Br(CO)3Re{CN(CH2)3PPhz-C9) (13) and {pCN(CH2)3PPhz)Rez(CO)8 (16). Reaction of (COD)PdC12 with 1 produced the complex (1-PJV)PdC12 (18), in which 1 acts as a a-N, a-P bidentate ligand. X-ray crystal structural analysis of [CpFe(CO){ CN(CH2)3PPh2-C,P}]PF6 (7a) and 18 confirmed the formulation of both complexes. The C z N bond distance [1.20(3) A] of 7a is greater than those in the related iron-isocyanide complexes; the angle C-N-C [ 141( 2)"] deviates from MOO, indicating that the resonance contribution of Fe=C=N-is more important than that of Fe-CEN-. These observations are consistent with spectral data, the smaller infrared stretching wavenumber (2089 cm-l), and the greater shift (13C NMR 6 183.7 ppm) of the isocyanide moiety of 7.

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High color gamut, high brightness and high resolution 0.59″ SVGA liquid‐crystal‐on‐Silicon (LCOS) panel is developed using novel color sequential technology. Design of frame‐buffer‐like pixels excludes the period of data addressing in the sub‐frame and relaxes the design rules of the electric circuit and the LCOS panel. In addition, implementation of reset voltage makes the panel to achieve high performance at 360 Hz field rate. The color gamut is larger than 120% NTSC ratio and the reflectance is 70%.