By combining the organometallic cyanides L n M-CN [L n M = Cp(dppe)Fe, Cp(dppe)Ru, Cp(PPh 3 ) 2 Ru] with FeCl 3 the dinuclear complexes L n M-CN-FeCl 3 were obtained. Structure determinations have revealed configurations close to linear arrays Fe-C-N-Fe and Ru-CN-Fe. From the n(CN) band positions in their IR spectra it can be concluded that FeCl 3 is a very strong electron acceptor. Accordingly...

In the crystal of the title compound, [Ru(C(2)H(6)NS)(C(26)H(24)P(2))(2)]PF(6), the Ru(II) atom is in a slightly distorted octa-hedral geometry, coordinated by one 2-amino-ethane-thiol-ate (aet) and two 1,2-bis-(diphenyl-phosphan-yl)ethane (dppe) ligands. The crystal consists of a pair of enanti-omers (Δ and Λ) of the compound. The Δ and Λ isomers have the λ and δ conformations for the aet chel...

In human platelets, phorbol esters, such as phorbol-12-myristate-13-acetate (PMA), induce morphological changes, including pseudopod formation and the swelling and fusion of intracellular granule membranes with those of the surface-connected canalicular system, effects which have been attributed to activation of protein kinase C. However, a novel intracellular histamine antagonist, N,N-diethyl-...

The novel complexes trans-[Ru(dppe)2(C≡CR)(C≡P)] (R = CO2Me, C6H4OMe), the first to incorporate cyaphide as part of a conjugated system, are obtained in facile manner. The electronic structure of these compounds is probed by X-ray, DFT and UV/Vis studies.

The redox-active metallaphosphine [Fe(dppe)(η(5)-C5Me5)(C≡C-PPh2)] reacts with [Pd(1,5-cod)Cl2] to give mono- and bis-phosphine coordinated palladium centres as a function of stoichiometry, and these complexes provide a stable redox-active platform which allows reversible one-electron {Fe(II)→Fe(III)(+)} oxidations within the palladium coordination sphere.

Spin-label electron spin resonance (ESR) spectroscopy and auxiliary optical density measurements are used to study lipid dispersions of N-poly(ethylene glycol)-dipalmitoyl phosphatidylethanolamine (PEG:5000-DPPE) mixed with dipalmitoyl phosphatidylcholine (DPPC). PEG:5000-DPPE bears a large hydrophilic polymer headgroup (with approximately 114 oxyethylene monomers) and is commonly used for ster...

The modification of conjugated organic compounds with organometallic moieties allows the modulation electronic and optoelectronic properties such lends them to a variety material applications. complexes [M(Cp′)(L)n] (M=Ru or Fe; Cp′=cyclopentadiene (Cp) pentamethylcyclopentadiene (Cp*); (L)n=(PPh3)2 1,2-bi(diphenylphosphino)ethane (dppe)) [M(L)n] (M=Ru; (L)n=(dppe)2 (P(OEt)3)4; M=Pt; (L)n=(PEt3...

Understanding photo induced electron transfer is a major scientific objective and is of technological impor tance for the design of synthetic molecular devices [1–3]. It is clear that the ability to mimic the natural photosyn thesis process in the laboratory would have great techno logical significance in terms of solar energy conversion and storage. Synthetic porphyrin based assemblies have be...

To develop the structural and functional modeling chemistry of [NiFe]-H2ases, we have carried out a study regarding synthesis, characterization reactivity new series [NiFe]-H2ase model complexes. Thus, treatment diphosphine dppb-chelated Ni complex (dppb)NiCl2 (dppb = 1,2-(Ph2P)2C6H4) with (dppv)Fe(CO)2(pdt) (dppv 1,2-(Ph2P)2C2H2, pdt 1,3-propanedithiolate) NaBF4 gave dicarbonyl [(dppb)Ni(pdt)F...

The new complexes [1,3-{Cp*(dppe)Fe−C≡C-}2-5-(X)-(C6H3)] (X=CH3, [m-1 b]; X=C(O)OCH3, c]; X=C≡C−4−C6H4−C(O)OCH3, d]; X=C≡C−4−C6H4-NO2, e]) were prepared by reaction of the iron chloride Cp*(dppe)FeCl (4) and proligands 3 b–e obtained a cross coupling between suitable aryl dibromides trimethylsylilacethylene. After purification b–e] isolated in yields ranging from 14 to 37 % characterized elemen...