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A-frame complexes

Lithium 1,2,4-triazolate with [Rh2( j,-Ph2PCH2PPh2)(CO)2( j.-Cl)]PFj. gives the A-framed complex 177 (L=L = CO) (86IC4597). With one equivalent of terf-butyl isocyanide, substitution of one carbon monoxide ligand takes place to yield 177 (L = CO, L = r-BuNC), whereas two equivalents of rerr-butyl isocyanide lead to the product of complete substitution, 177 (L = L = r-BuNC). The starting complex (L = L = CO) oxidatively adds molecular iodine to give the rhodium(II)-rhodium(II) cationic species 178. [Pg.161]

Pt Pt bond to give A-frame complexes.108 The related mixed-metal complex [PtCl(p-dppm)2Pd(C6F5)] also reacts with R2N+, S02, and alkynes to give A-frame complexes. [Pg.687]

A-frame complexes which have a bridging hydride ligand, or which are capable of rearranging rapidly to a complex with a bridging hydride, undergo A-frame inversion on the NMR time scale. This A-frame inversion occurs through an intermediate with a linear Pt—H—Pt group.1451... [Pg.458]

FIGURE 39. Structure of the isocyanide functionalized [2.2]paracyclophane 93 and the A-Frame complex 94. [Pg.80]

A particularly interesting class of S02-bridged polynuclear complexes is exemplified by the A-frame complex [PdCl(dpm)]2(S02), which results from addition of SO2 to the metal-metal bonded dimer [PdCl(dpm)]2 (Fig. 31). A unique feature of this complex is the reversibility of the SO2 binding across the metal-metal bond. Carbon monoxide effects a similar reaction with [PdQ(dpm)]2. X-ray photoelectron spectra have been reported for the SO2 complex and its arsenic analogue [PdQ(dam)]2(S02). Insertion... [Pg.83]

The product retains the Rh=Rh double bond in what is really a snbstitution of CO by CH2. Insertion of CH2 into a metal metal single bond is seen in the synthesis of the platinum A-frame complex shown in eqnation (39), a rare example of a bridging methylene complex withont an M M bond (stiucture of type (12)). [Pg.5759]

The dppm-bridged trihydride A-frame complex [Pt2H2(,u-H)( -dppm)2], prepared by NaBH4 reduction of [PtCl2(dppm)], loses H2 on treatment with neutral ligands ... [Pg.487]

PtClH(PPh3)2] produces the A-frame complex [Pt2(C=CR)2(/i-H)(/r-dppm)2j+, which is fluxional at ambient temperature. Deprotonation with NaOPr leads to the platinum(I) species [Pt2(C=CR)2(/r-dppm)2], which... [Pg.17]

SCHEME 14. Derivatization of Au(III) A-frame complexes by ligand substitution... [Pg.263]

Binuclear complexes of this type of structure are called A-frame complexes (see Sect. 10.3). [Pg.437]

See other pages where A-frame complexes is mentioned: [Pg.184]    [Pg.184]    [Pg.697]    [Pg.490]    [Pg.641]    [Pg.653]    [Pg.686]    [Pg.707]    [Pg.732]    [Pg.195]    [Pg.247]    [Pg.903]    [Pg.184]    [Pg.184]    [Pg.253]    [Pg.79]    [Pg.1102]    [Pg.1112]    [Pg.1070]    [Pg.1850]    [Pg.1850]    [Pg.3532]    [Pg.891]    [Pg.10]    [Pg.15]    [Pg.16]    [Pg.17]    [Pg.18]    [Pg.19]    [Pg.21]    [Pg.21]    [Pg.268]    [Pg.697]    [Pg.735]    [Pg.1849]    [Pg.1849]    [Pg.3531]    [Pg.300]    [Pg.315]    [Pg.496]   
See also in sourсe #XX -- [ Pg.402 ]

See also in sourсe #XX -- [ Pg.261 , Pg.277 ]

See also in sourсe #XX -- [ Pg.289 ]

See also in sourсe #XX -- [ Pg.524 , Pg.525 ]



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