Results 201 to 210 of about 18,776 (234)

Antimicrobial Piano‐Stool and Polypyridyl Ru(II) Complexes with Thiazolhidrazinylidene‐Chroman‐2,4‐Dione: Tautomerism, Membrane Disruption, and Electron Transport Interference

ChemBioChem
A library of (η6‐p‐cymene)Ru(II) and Ru(II) bis‐bpy complexes bearing thiazolhidrazinylidene‐chroman‐2,4‐dione was synthesized, characterized, and the molecules are evaluated for their antibacterial activity and cytotoxicity.
Fatlinda Rahmani, Gozde Demirci, Youri Cortat, A. Crochet, F. Zobi   +4 more
semanticscholar   +1 more source

Triazolylidene Iron(II) Piano-Stool Complexes: Synthesis and Catalytic Hydrosilylation of Carbonyl Compounds

Organometallics, 2017
A new series of iron(II) piano stool complexes was synthesized that contain monodentate triazolylidene ligands with different aryl and alkyl substituents as well as an example of a C,N-chelating pyridine-substituted triazolylidene iron complex.
C. Johnson, M. Albrecht
semanticscholar   +2 more sources

A Novel Iodine-bridged Piano-stool Iron Complex: Crystal Structure and Electronic State

Chemistry Letters, 2005
Abstract The iodine-bridged iodo(pentamethylcyclopentadienyl)iron dicarbonyl complex, [(η5-C5Me5)Fe(CO)2I–I]2 (1) has been synthesized and characterized by single crystal X-ray diffraction method, IR spectroscopy, and 57Fe Mössbauer spectroscopy.
N. Masuhara, S. Nakashima, Koji Yamada
semanticscholar   +2 more sources

Tantalum-ligand bond lengths in d0 and d1 piano-stool complexes

Organometallics, 1988
Des calculs par methode ab initio et Huckel generalisee expliquent pourquoi la liaison Ta−Si est plus grande dans (η 5 C 5 H 5 )TaCl 3 (SiH 3 ) que dans (η 5 C 5 H 5 )TaCl 2 (PH 3 )(SiH 3 )
Jyh Shing. Lin, J. V. Ortiz
openaire   +1 more source

Toward a Broadly Applicable Force Field for d⁶-Piano Stool Complexes

Journal of Chemical Theory and Computation, 2013
Three-legged piano stool complexes are prototypical organometallic complexes relevant to a wide range of chemically relevant questions. Force field parametrization of transition-metal complexes is difficult and underdeveloped, and metal-specific force fields and software are required. Here we report our efforts to derive parameters for the conventional
Schmid, Maurus H., Ward, Thomas R., Meuwly, Markus   +2 more
openaire   +3 more sources

Piano-stool inversion in arene complexes of Ru(ii): modelling the transition state

Journal of the Chemical Society, Dalton Transactions, 2002
In the solid-state, the [RuH(arene)(Binap)]CF3SO3, complexes, 1, arene = η6-benzene and 2, arene = η6-toluene, distort markedly from a classical three-legged piano-stool structure with the former having the P–Ru–P plane approximately perpendicular to the plane of the arene; this structure for 1 is what one would expect for a transition state leading ...
T. Geldbach, P. Pregosin, A. Albinati
openaire   +1 more source

Further insights into ruthenium(II) piano-stool complexes with N-alkyl imidazoles

Inorganica Chimica Acta, 2018
© 2018 Elsevier B.V. Two piano-stool ruthenium(II) complexes [Ru(η6-p-cymene)(N-MeIm)3]Cl2·2H2O (1) and [Ru(η6-p-cymene)(N-PrIm)Cl2] (2) respectively have been synthesized and characterized by elemental, spectral and structural analysis. Crystal structures of (1) and (2) have been verified by X-ray diffraction analysis.
Maja Djukić, Marija S. Jeremić, Ratomir Jelić, Olivera Klisurić, Vesna Kojić, Dimitar Jakimov, Predrag Djurdjević, Zoran D. Matović   +7 more
openaire   +2 more sources

Coordination of Piano‐Stool Complexes to a Hydrogen‐Bonded Rosette‐Type Assembly

European Journal of Inorganic Chemistry, 2017
A new melamine (ME)–barbituric acid (BA) rosette‐type system has been prepared and characterized. The introduction of a pyridyl group on the barbituric acid moiety allows coordination of metal ions at the periphery of the ME3·BA3 rosette. Reactions of 1.5 equiv.
Fan Zhang, Bruno Therrien
openaire   +1 more source

Piano stool complexes of N-heterocyclic carbene ligands bearing a galactose-derived substituent

Inorganica Chimica Acta, 2020
Abstract Piano stool complexes of NHC ligands bearing a chiral auxiliary derived from α-ᴅ-galactose, and linked through the C-6 carbon atom, have been synthesized and structurally characterized by single crystal X-ray diffraction. [(η6-C6H3Me3)RuCl2(κC-1,3-MeNC3H2NR)], R = 1,2:3,4-di-O-isopropylidene-6-deoxy-α-D-galactopyran-6-yl, (4) crystallized in
Sravan K. Bandaru, Hayden P. Thomas, Graham C. Saunders   +2 more
openaire   +1 more source

The synthesis and cyclic voltammetry of select ferrocene piano-stool isocyanide complexes

Inorganica Chimica Acta, 2011
Abstract Ferrocene piano-stool isocyanide complexes ([CpFeL 3 ] + , Cp = η 5 -C 5 H 5 , L = tert-butyl isocyanide ( 1 ), cyclohexyl isocyanide ( 2 ), and 2,6-dimethylphenyl isocyanide ( 3 )) are formed by chemical oxidation of ferrocene in the presence of a stoichiometric amount of isocyanide ligand (1:3). The complexes are characterized by elemental
Brian D. Humphrey, Raidiri E. Castilo, Amy H. Vega, Argelia Feliciano, Marjorie E. Squires   +4 more
openaire   +1 more source