Influence of nature of central metal atom in tetrapyrrole pigments on triplet state deactivation processes

1985 ◽  
Vol 21 (1) ◽  
pp. 58-62
Author(s):  
E. I. Kapinus ◽  
V. P. Staryi ◽  
I. I. Dilung
Keyword(s):  
Triplet State ◽  
Metal Atom ◽  
Central Metal Atom ◽  
Central Metal

Investigation of a New Xanthate Ligand. The Crystal and Molecular Structures of Nickel and Cadmium (Methoxyethyl)xanthates

1988 ◽  
Vol 41 (7) ◽  
pp. 1117 ◽  
Author(s):  
BF Abrahams ◽  
BF Hoskins ◽  
ERT Tiekink ◽  
G Winter
Keyword(s):  
Crystal Structures ◽  
Metal Atom ◽  
Molecular Structures ◽  
Central Metal Atom ◽  
Central Metal ◽  
Crystal And Molecular Structures ◽  
Cadmium Compound

The crystal structures of Ni(S2COCH2CH2OCH3)2 and Cd (S2COCH2CH2OCH3)2 have been determined. Crystals Ni(S2COCH2CH2OCH3)2 are orthorhombic, Pbca , with a 7.852(1), b 7.126(2), c 24.963(4)Ǻ, Z 4. Crystals of Cd (S2COCH2CH2OCH3)2 are monoclinic, P21/c, with a 12.712(2), b 4.215(1), c 13.400(2)Ǻ, β 104.60(1)°, Z 2. In both structures the central metal atom is coordinated by the sulfur atoms in a planar arrangement, an unexpected observation for the cadmium compound.

scholarly journals Interface interaction of transition metal phthalocyanines with strontium titanate (100)

2021 ◽  
Vol 12 ◽  
pp. 485-496
Author(s):  
Reimer Karstens ◽  
Thomas Chassé ◽  
Heiko Peisert
Keyword(s):  
Transition Metal ◽  
Metal Atom ◽  
Photoelectron Spectroscopy ◽  
Interaction Mechanism ◽  
Oxide Surface ◽  
Central Metal Atom ◽  
Central Metal ◽  
Metal Phthalocyanines ◽  
Niobium Doped ◽  
Oxide Substrate

We study interface properties of CoPcFx and FePcFx (x = 0 or 16) on niobium-doped SrTiO3(100) surfaces using mainly X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy. For all studied molecules, a rather complex, bidirectional charge transfer with the oxide substrate was observed, involving both the macrocycle and the central metal atom. For molecules of the first monolayer, an electron transfer to the central metal atom is concluded from transition metal 2p core level photoemission spectra. The number of interacting molecules in the first monolayer on the oxide surface depends on the central metal atom of the phthalocyanine, whereas the substrate preparation has minor influence on the interaction between CoPc and SrTiO3(100). Differences of the interaction mechanism to related TiO2 surfaces are discussed.

Measurement and interpretation of infrared and raman spectra of bis(2,4-pentandionate)complexes of Cu(II) and Pd(II)

1985 ◽  
Vol 50 (2) ◽  
pp. 306-316 ◽  
Author(s):  
Blanka Vlčková ◽  
Bohuslav Strauch ◽  
Milan Horák
Keyword(s):  
Raman Spectra ◽  
Metal Atom ◽  
The Other ◽  
Ir And Raman Spectra ◽  
Particle Model ◽  
Central Metal Atom ◽  
Central Metal ◽  
Infrared And Raman Spectra ◽  
Empirical Interpretation ◽  
Ir And Raman

Infrared and Raman spectra of Cu(II) bis(2,4-pentandionate) and Pd(II) bis(2,4-pentandionate) complexes have been measured and interpreted. The coincidence of numerous bands in the IR and Raman spectra has been explained by the isolation effect of the heavy central metal atom which prevents the vibrational interaction of the two ligands in the chelate molecule with each other. An 11-particle model consisting of all the atoms of one ligand (both CH3 groups are taken as the point masses), a central metal atom and two oxygen atoms of the other ligand has been proved to be most adequate for the empirical interpretation of the spectra.

RESONANT THIRD-ORDER OPTICAL NONLINEARITIES OF HIGHLY-SUBSTITUTED PHTHALOCYANINE DERIVATIVES

2006 ◽  
Vol 15 (01) ◽  
pp. 167-178 ◽  
Author(s):  
GANG FU ◽  
KAZUO KASATANI ◽  
HIROAKI OKAMOTO
Keyword(s):  
Metal Atom ◽  
Central Metal Atom ◽  
Central Metal ◽  
Optical Nonlinearities ◽  
Structure Property ◽  
Third Order ◽  
Solid Films ◽  
Structure Property Relationships ◽  
Molecular Hyperpolarizability ◽  
Molecular Stacking

Third-order optical nonlinearities of three highly-substituted phthalocyanines (Pcs) containing central metal atom VO , Al , and Cu were investigated under resonant conditions by femtosecond degenerate four-wave mixing. The dynamics of the nonlinear response was found to be strongly dependent on the nature of the central metal atom and molecular stacking form. The electronic molecular hyperpolarizability of the Pcs was evaluated and compared with their structure-related analogues. The electronic third-order susceptibilities of the solid films containing the Pcs were determined to be in the range of 10-10 to 10-9 esu. We attempt to give structure-property relationships in these macrocyclic compounds.

Influence of the central metal atom on the nonlinear optical properties of MPcs solutions and thin films

2007 ◽  
Vol 274 (1) ◽  
pp. 206-212 ◽  
Author(s):  
B. Derkowska ◽  
M. Wojdyła ◽  
R. Czaplicki ◽  
W. Bała ◽  
B. Sahraoui
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Metal Atom ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Central Metal Atom ◽  
Central Metal

Butadiene as a ligand in open sandwich compounds

2018 ◽  
Vol 20 (8) ◽  
pp. 5683-5691 ◽  
Author(s):  
Qunchao Fan ◽  
Jia Fu ◽  
Huidong Li ◽  
Hao Feng ◽  
Weiguo Sun ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Metal Atom ◽  
Density Functional ◽  
Central Metal Atom ◽  
Central Metal ◽  
Tetrahedral Coordination ◽  
Functional Theory ◽  
Metal Structures ◽  
Sandwich Compounds

Density functional theory shows the lowest energy bis(butadiene)metal structures (C4H6)2M (M = Ti to Ni) to have a staggered orientation of the two butadiene ligands corresponding to a tetrahedral coordination of the central metal atom.

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