Phosphorus-mediated gold aggregation on a metal cluster: syntheses, structures, dynamic behavior, and ligand addition reactions of the clusters (.mu.-H)nFe3(CO)9P[Au(PR3)]3-n (n = 0, 1, 2)

1993 ◽  
Vol 32 (25) ◽  
pp. 5665-5675 ◽  
Author(s):  
Deborah L. Sunick ◽  
Peter S. White ◽  
Cynthia K. Schauer
Keyword(s):  
Dynamic Behavior ◽  
Metal Cluster ◽  
Addition Reactions ◽  
Ligand Addition

scholarly journals Axial Addition in Diastereoisomeric [Ni(Me8[14]ane)](ClO4)2 Complexes and Their Antifungal Activities

2021 ◽  
Vol 41 (1) ◽  
pp. 122-147
Author(s):  
D Palit ◽  
L Dey ◽  
S Rabi ◽  
S Roy ◽  
A Alam ◽  
...  
Keyword(s):  
Phytopathogenic Fungi ◽  
Axial Ligand ◽  
Addition Reactions ◽  
Antifungal Activities ◽  
Conductance Data ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Ligand Addition

A series of diastereoisomeric square planar nickel(II) diperchlorate complexes, [Ni(L)](ClO4)2{L= isomeric Me8[14]ane (LAα, LBα or LCα)}undergo axial ligand addition reactions with NO3-, Cl-, Br-, SCN- or ClO4- to yield six coordinate octahedral derivatives [NiL(X)x(Y)y].z(H2O)(X=NO3,Cl, Br or SCN; Y= ClO4; x = 1 or 2; y = 1 or 0 and z = 0, 1 or 2). The products have been characterized on the basis of analytical, spectroscopic, magnetic and conductance data. All the derivatives are unstable in open air except one derivative and revert back to original square planar complexes. Antifungal activities of the ligands and their nickel(II) complexes  have been investigated against some phytopathogenic fungi. The Chittagong Univ. J. Sci. 40(1) : 122-147, 2019

First Examples of Homogeneous Catalytic Cyclotrimerization and Polymerization of Phenylacetylene and Copolymerization of Phenylacetylene and Norbonene with Dinuclear Complexes Containing Unbridged Metal-Metal Quadruple Bond

2003 ◽  
Vol 68 (6) ◽  
pp. 1094-1104 ◽  
Author(s):  
Konstantinos Mertis ◽  
Stavros Arbilias ◽  
Demos Argyris ◽  
Nikos Psaroudakis ◽  
Jiří Vohlídal ◽  
...  
Keyword(s):  
Dinuclear Complexes ◽  
Addition Reactions ◽  
Polymer Yield ◽  
Quadruple Bond ◽  
Metal Metal ◽  
Medium Activity ◽  
Copolymer Structure ◽  
Almost All ◽  
Ligand Addition ◽  
Low Activity

First examples of application of dinuclear complexes containing unbrigded metal-metal quadruple bond as catalysts in cyclotrimerization, oligomerization and polymerization of substituted acetylene are reported. The d4-d4 dinuclear complexes (Bu4N)2[Re2X8] (1) (1a, X = Cl; 1b, X = Br and 1c, X = I) show low activity and the complex [Mo2Cl4(MeOH)2(PPh3)2] (2) medium activity in cyclotrimerization and oligomerization of phenylacetylene (PA). In contrast, the tungsten-based d4-d4, complex Na4[W2Cl8] (3) exhibits high polymerization activity (polymer yield above 90%) and ca 75% cis-selectivity in tetrahydrofuran. The activity and cis-stereoselectivity of these single-component catalysts decrease in the order 3 >> 2 >> 1, which is proportional to the metal-metal quadruple bond propensity towards ligand addition reactions. Complex 3 induces metathesis polymerization of norbornene (NBE) to poly(cyclopentene-1,3-diylvinylene) with 82% cis-selectivity and copolymerization of PA and NBE to almost all-cis high-molecular-weight copolymer containing cyclopentene-1,3-diylvinylene units, which is free of longer sequences of both PA and NBE units. This suggests that also homopolymerization of PA with 3 proceeds by the metathesis mechanism and that the PA/NBE copolymer structure is close to the alternating one.

scholarly journals The effect of coordination of alkanes, Xe and CO2 (η1-OCO) on changes in spin state and reactivity in organometallic chemistry: a combined experimental and theoretical study of the photochemistry of CpMn(CO)3

2019 ◽  
Vol 220 ◽  
pp. 86-104 ◽  
Author(s):  
Xue Wu ◽  
Zhen Liu ◽  
Thomas S. Murphy ◽  
Xue Z. Sun ◽  
Magnus W. D. Hanson-Heine ◽  
...  
Keyword(s):  
Organometallic Chemistry ◽  
Spin State ◽  
Theoretical Study ◽  
Addition Reactions ◽  
Ligand Addition

A study is presented of ligand addition reactions of the fragment 3CpMn(CO)2 formed upon photolysis of CpMn(CO)3.

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