Platinum complexes heterobimetallic

The bis-enolate Cp2Ti[OC(Ph)=CHPPh2]2 has been synthesized by reaction of Cp2TiCl2 with the Li salt of the phosphinoenolate ligand. The complex reacts with platinum complexes to afford heterobimetallic derivatives.1548... 

Other work has demonstrated that it is possible to switch ON and OFF luminescence by reduction/oxidation, and it has been demonstrated that such switching is possible inside an OTTLE cell. Many alkynyl complexes, especially those of rhenium, platinum,copper, silver or gold " are highly luminescent from their excited MLCT or metal perturbed 71 states. This opens up the possibility to significantly influence their emissive properties by redox processes. An interesting example is found in recent work of Wong et Unlike other rhenium(I)-alkynyl complexes, heterobimetallic... 

Analogous cyano complexes can be prepared. Treating the bis chelate complex [Pt(dppm)2]2+ with 2 equivalents of NaCN leads to stabilization of the r 1-dppm complex (151) which can be used to prepare heterobimetallic bridging complexes with added M (M= Ag+/I, HgCl2, Rh2Cl2(CO)4) (equation 433).1461 Similar complexes can be formed with dialkyl and diaryl substituents on platinum in place of cyanide.1462... 

Ligands with a single carbon atom between phosphorus and a heteroatom have been synthesized and used to prepare heterobimetallic complexes between platinum and a second metal ion. Examples of such complexes are shown in structures (153)-(156).1464-1467... 

Bimetallic alkenes, with platinum heterobimetallic complexes, 8, 637 homobimetallic complexes, 8, 635 Bimetallic complexes... 

Polymetallic alkynes, with platinum heterobimetallic derivatives, 8, 647 homobimetallic complexes, 8, 645 polymetallic derivatives, 8, 648 Polymetallic cyclopentadienyl iridium complexes, preparation and characteristics, 7, 370... 

Somewhat more loosely related to platinum antitumor drugs were EHMO calculations performed on heterobimetallic Pt-Pd complexes with a bridging methylcytosinate anion by Mealli, Randaccio, Lippert, and coworkers [31][32], The calculations served to elucidate the metal-metal and metal-ligand binding interactions, and yielded a qualitative interpretation of the 195Pt-NMR chemical shifts. 

Keywords Silyl Complexes / Platinum / Rhenium / Chelate / Heterobimetallics... 

Reaction of [Pt Au (dppm)2(Ph)Cl]PFg [178] with the chlorine source PhIClj yields [Pt "Au" (dppm)2(Ph)Cl3]PFg, the first Pt(III)-Au(II) heterobimetallic [179]. The reduced complex lacks a metal-metal o-bond, with a platinum-gold distance of 2.9646(3) A. The oxidized complex has a 2.6457(3) A Pt-Au bond. In the presence of an olefin trap, photolysis of [Pt Au (dppmljfPhlClj ] PFg affords reduced [Pt Au (dppm)2(Ph)Cl] (PFg) along with chlorination products of the olefin. Scheme 11.7. 

Heterobimetallic iron-platinum and iron-palladium complexes based on the pincer funetionalized ferrocene Fc-NCN (NCN = [4-C6H2(CH2NMe2-2,6)2] ) are available by the synthesis protocol shown in Scheme 3 [49, 50],... 

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