Geometry Optimizations of the Ground and Excited Triplet State Structures of the Low-Valent Metal−Metal Bonded Isocyanide and Carbonyl Di- and Trinuclear Palladium Complexes Using Density Functional Theory

1996 ◽  
Vol 35 (7) ◽  
pp. 2113-2118 ◽  
Author(s):  
Réjean Provencher ◽  
Pierre D. Harvey
Keyword(s):  
Density Functional Theory ◽  
Triplet State ◽  
Density Functional ◽  
Palladium Complexes ◽  
Excited Triplet State ◽  
Functional Theory ◽  
Excited Triplet ◽  
Metal Metal ◽  
Low Valent

DFT Calculations on Group 5 Mixed Metal Tetramers: TaxNbyVz (x + y + z = 4)

2004 ◽  
Vol 57 (12) ◽  
pp. 1197 ◽  
Author(s):  
Magdalene A. Addicoat ◽  
Mark A. Buntine ◽  
Gregory F. Metha
Keyword(s):  
Density Functional Theory ◽  
Dft Calculations ◽  
Triplet State ◽  
Density Functional ◽  
Metal Cluster ◽  
Functional Theory ◽  
Mixed Metal ◽  
Mixed Metal Cluster ◽  
Group 5

We report Density Functional Theory (DFT) calculations on mixed-metal tetramers comprised of the Group 5 (Vb) elements V, Nb, and Ta. Our results show that the lowest energy structures for Nb4 and Ta4 are regular tetrahedra with Td symmetry and singlet multiplicity whereas V4 is a triplet state with C2v symmetry. The monosubstituted isomers, A3B, all have C3v symmetry but several higher energy Cs structures have been found that are approximately 100 kJ mol−1 higher in energy. The disubstituted isomers all posses arachno-butterfly structures; the A2B2 types with C2v symmetry and the A2BC types with Cs symmetry. However, the relative openness of the arachno structures is found to be specific to the composition of the mixed-metal cluster.

The triplet state of a platinum acetylide chromophore examined by time-resolved infrared spectroscopy and density functional theory

2004 ◽  
Vol 400 (1-3) ◽  
pp. 239-244 ◽  
Author(s):  
Thomas M. Cooper ◽  
Jean-Philippe Blaudeau ◽  
Benjamin C. Hall ◽  
Joy E. Rogers ◽  
Daniel G. McLean ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Infrared Spectroscopy ◽  
Triplet State ◽  
Density Functional ◽  
Functional Theory ◽  
Time Resolved ◽  
Time Resolved Infrared Spectroscopy
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