Charge-Transfer Effects in Ligand Exchange Reactions of Au25 Monolayer-Protected Clusters

Three Re(I) tricarbonyl complexes, with general formulation Re(N^L)(CO)3X (where N^L is a bidentate ligand containing a pyridine functionalized in the position 2 with a thione or a thiazol-2-ylidene group and X is either chloro or bromo) were synthesized and their reactivity explored in terms of solvent-dependent ligand substitution, both in the ground and excited states. When dissolved in acetonitrile, the complexes bound to the thione ligand underwent ligand exchange with the solvent resulting in the formation of Re(NCMe)2(CO)3X. The exchange was found to be reversible, and the starting complex was reformed upon removal of the solvent. On the other hand, the complexes appeared inert in dichloromethane or acetone. Conversely, the complex bound to the thiazole-2-ylidene ligand did not display any ligand exchange reaction in the dark, but underwent photoactivated ligand substitution when excited to its lowest metal-to-ligand charge transfer manifold. Photolysis of this complex in acetonitrile generated multiple products, including Re(I) tricarbonyl and dicarbonyl solvato-complexes as well as free thiazole-2-ylidene ligand.

Download Full-text

Voltammetric Studies of Some Novel Fe(III) Complexes with Quadridentate Ligands. The Axial Ligand-Exchange Reactions in DMF and DMSO

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19951140 ◽

1995 ◽

Vol 60 (7) ◽

pp. 1140-1157 ◽

Cited By ~ 1

Author(s):

Ljiljana S. Jovanovic ◽

Luka J. Bjelica

Keyword(s):

Oxidation State ◽

Chemical Reactions ◽

Ligand Exchange ◽

Kinetic Data ◽

Central Atom ◽

Axial Ligand ◽

Exchange Reactions ◽

Ligand Effect ◽

Condensation Products ◽

Voltammetric Studies

The electrochemistry of four novel Fe(III) complexes of the type [Fe(L)Cl], involving quadridentate ligands based on the condensation products of benzoylacetone-S-methylisothiosemicarbazone with salicylaldehyde, 5-chlorosalicylaldehyde, 3,5-dichlorosalicylaldehyde or 5-nitrosalicylaldehyde, was studied in DMF and DMSO at a GC electrode. All complexes undergo a two-step one-electron reductions, usually complicated by chemical reactions. In solutions containing Cl-, the ligand-exchange reactions Cl--DMF and Cl--DMSO take place. Stability of the chloride-containing complexes was discussed in terms of the coordinated ligand effect, oxidation state of the central atom and, in particular, of the donor effect of the solvent. Some relevant kinetic data were calculated.

Download Full-text

ChemInform Abstract: SYNTHESIS AND LIGAND EXCHANGE REACTIONS OF HETEROBIMETALLIC DI-TERT-BUTYLPHOSPHIDO-BRIDGED COMPLEXES OF CHROMIUM-COBALT, CHROMIUM-RHODIUM AND IRON-COBALT. X-RAY CRYSTAL STRUCTURES OF (CO)5CR(μ-TERT-BU2P)RH(COD) (CR-RH) (COD = 1,5-CYCL

Chemischer Informationsdienst ◽

10.1002/chin.198516312 ◽

1985 ◽

Vol 16 (16) ◽

Author(s):

D. J. CHANDLER ◽

R. A. JONES ◽

A. L. STUART ◽

T. C. WRIGHT

Keyword(s):

Crystal Structures ◽

Ligand Exchange ◽

Cobalt Chromium ◽

Exchange Reactions ◽

Iron Cobalt ◽

X Ray

Download Full-text

Erratum: Cyclobutadiene–metal complexes. Part VIII. Synthesis of tetraphenylcyclobutadienenickel halides by ligand-exchange reactions

Canadian Journal of Chemistry ◽

10.1139/v67-344 ◽

1967 ◽

Vol 45 (18) ◽

pp. 2121-2121

Author(s):

D. F. Pollock ◽

P. M. Maitlis

Keyword(s):

Metal Complexes ◽

Ligand Exchange ◽

Exchange Reactions

Download Full-text

ChemInform Abstract: LIGAND EXCHANGE REACTIONS BETWEEN FERROCENE AND 9,10-DIMETHYLANTHRACENE

Chemischer Informationsdienst ◽

10.1002/chin.197843312 ◽

1978 ◽

Vol 9 (43) ◽

Author(s):

R. G. SUTHERLAND ◽

W. J. PANNEKOEK ◽

C. C. LEE

Keyword(s):

Ligand Exchange ◽

Exchange Reactions

Download Full-text

ChemInform Abstract: Π-CORONENE-Π-CYCLOPENTADIENYLIRON CATIONS VIA LIGAND EXCHANGE REACTIONS WITH FERROCENES

Chemischer Informationsdienst ◽

10.1002/chin.197848331 ◽

1978 ◽

Vol 9 (48) ◽

Author(s):

G. SCHMITT ◽

W. KEIM ◽

J. FLEISCHHAUER ◽

U. WALBERGS

Keyword(s):

Ligand Exchange ◽

Exchange Reactions

Download Full-text

A first-principles study of the atomic layer deposition of ZnO on carboxyl functionalized carbon nanotubes: the role of water molecules

Physical Chemistry Chemical Physics ◽

10.1039/d0cp05283c ◽

2021 ◽

Vol 23 (5) ◽

pp. 3467-3478

Author(s):

J. I. Paez-Ornelas ◽

H. N. Fernández-Escamilla ◽

H. A. Borbón-Nuñez ◽

H. Tiznado ◽

Noboru Takeuchi ◽

...

Keyword(s):

First Principles ◽

Ligand Exchange ◽

Functional Group ◽

Atomic Layer ◽

High Reactivity ◽

Water Molecules ◽

Exchange Reactions ◽

Layer Deposition ◽

The Right

Atomic description of ALD in systems that combine large surface area and high reactivity is key for selecting the right functional group to enhance the ligand-exchange reactions.

Download Full-text