Photophysics and Photochemistry of Organometallic Rhenium Diimine Complexes

2009 ◽  
pp. 37-71 ◽  
Author(s):  
Arvind Kumar ◽  
Shih-Sheng Sun ◽  
Alistair J. Lees
Keyword(s):  
Diimine Complexes

Cobalt-β-diimine complexes for ethylene oligomerization

2017 ◽  
Vol 101 ◽  
pp. 85-88 ◽  
Author(s):  
Marcela Caovilla ◽  
Daniel Thiele ◽  
Roberto F. de Souza ◽  
José R. Gregório ◽  
Katia Bernardo-Gusmão
Keyword(s):  
Ethylene Oligomerization ◽  
Diimine Complexes

Thermochromic and Aggregation Properties of Bis(phenylisocyano) Rhodium(I) Diimine Complexes

2009 ◽  
Vol 28 (13) ◽  
pp. 3597-3600 ◽  
Author(s):  
Larry Tso-Lun Lo ◽  
Chi-On Ng ◽  
Hua Feng ◽  
Chi-Chiu Ko
Keyword(s):  
Diimine Complexes

Transfer chemical potentials for iron(II)-diimine complexes from water into aqueous methanol

1984 ◽  
Vol 9 (8) ◽  
pp. 306-308 ◽  
Author(s):  
Ezz -Eldin A. Abu-Gharib ◽  
Michael J. Blandamer ◽  
John Burgess ◽  
Nrinder Gosal ◽  
Pilar Guardado ◽  
...  
Keyword(s):  
Aqueous Methanol ◽  
Chemical Potentials ◽  
Diimine Complexes

Solvation and reactivity of iron(II)–diimine complexes in dimethyl sulfoxide–water mixtures

1993 ◽  
Vol 89 (7) ◽  
pp. 1041-1047 ◽  
Author(s):  
Ahmad Al-Alousy ◽  
Saad Alshehri ◽  
Michael J. Blandamer ◽  
Nicholas J. Blundell ◽  
John Burgess ◽  
...  
Keyword(s):  
Dimethyl Sulfoxide ◽  
Diimine Complexes

Photoswitching tetranuclear rhenium(i) tricarbonyl diimine complexes with a stilbene-like bridging ligand

2011 ◽  
Vol 47 (21) ◽  
pp. 6030 ◽  
Author(s):  
Ju-Ling Lin ◽  
Chih-Wei Chen ◽  
Shih-Sheng Sun ◽  
Alistair J. Lees
Keyword(s):  
Bridging Ligand ◽  
Diimine Complexes

Evaluation of the Anticancer and DNA-Binding Characteristics of Dichloro(diimine)zinc(II) Complexes

Chemistry ◽  
2021 ◽  
Vol 3 (4) ◽  
pp. 1178-1188
Author(s):  
Bandar A. Babgi ◽  
Doaa Domyati ◽  
Magda H. Abdellattif ◽  
Mostafa A. Hussien
Keyword(s):  
Dna Binding ◽  
Binding Constants ◽  
Docking Study ◽  
Binding Mode ◽  
Molecular Docking Study ◽  
Binding Characteristics ◽  
Anticancer Properties ◽  
Amino Phenol ◽  
Donor Acceptor ◽  
Diimine Complexes

Several metal diimine complexes have been reported to possess anticancer properties. To evaluate the anticancer properties of tetrahedral zinc(II) diimine complexes, six complexes were synthesized with the general formula M(N^N)Cl2 {where M = Zn, Pt and N^N = 2,2’-biquinoline (1), 2,2’-dipyridylketone (2) and 4-((pyridine-2-ylmethylene)amino)phenol (3)}. In general, the intrinsic DNA-binding constants for the different compounds exhibited values within close proximity; the changes in the viscosity of the CT-DNA upon binding to the compounds suggest intercalation-binding mode. Molecular docking study predicted that complexes containing the highly planar ligand 2,2’-biquinoline are capable to establish π–π interactions with nucleobases of the DNA; the other four complexes engaged in donor–acceptor interactions with DNA nucleobases. The six complexes and two reference drugs (cisplatin and sunitinib) were tested against two cancer cell lines (COLO 205 and RCC-PR) and one normal cell line (LLC-MK2), highlighting the better performance of the zinc(II) complexes compared to their platinum(II) analogues. Moreover, zinc(II) complexes have higher selectivity index values than the reference drugs, with promising anticancer properties.

Spectroscopic trends in a series of Re(I) α-diimine complexes as a function of the antenna/photoisomerizable ligands: a TD-DFT and MS-CASPT2 study

2014 ◽  
Vol 92 (10) ◽  
pp. 979-986 ◽  
Author(s):  
Megumi Kayanuma ◽  
Chantal Daniel ◽  
Etienne Gindensperger
Keyword(s):  
Excited States ◽  
Electronic Structures ◽  
Density Functional ◽  
Time Dependent ◽  
Functional Theory ◽  
B3lyp Level ◽  
Ligand Charge Transfer ◽  
Td Dft ◽  
Energy Domain ◽  
Diimine Complexes

The absorption spectra of 11 rhenium(I) complexes with photoisomerizable stilbene-like ligands have been investigated by means of density functional theory (DFT). The electronic structures of the ground and excited states were determined for [Re(CO)3(N,N)(L)]+ (N,N = bpy (2,2′-bipyridine), phen (1,10-phenanthroline), Me4phen (3,4,7,8-tetramethyl-1,10-phenanthroline), ph2phen (4,7-diphenyl-1,10-phenanthroline), or Clphen (5-chloro-1,10-phenanthroline); L = bpe (1,2-bis(4-pyrydil)ethylene), stpy (4-styrylpyridine), or CNstpy (4-(4-cyano)styrylpyridine)) at the time–dependent (TD) DFT/CAM-B3LYP level of theory in vacuum and acetonitrile to highlight the effects of both antenna N,N and isomerizable L ligands. The TD-DFT spectra of two representative complexes, namely [Re(CO)3(bpy)(stpy)]+ and [Re(CO)3(phen)(bpe)]+, have been compared with MS-CASPT2 spectra. The TD-DFT spectra obtained in vacuum and acetonitrile agree rather well both with the ab initio and experimental spectra. The absorption spectroscopy of this series of molecules is characterized by the presence of three low-lying metal to ligand charge transfer (MLCT) states absorbing in the visible energy domain. The nature of the isomerizable ligands (bpe, stpy, or CNstpy) and the type of antenna ligands (bpy, phen, and substituted phen) control the degree of mixing between the MLCT and intraligand excited states, their relative energies, as well as their intensities.

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