Electronic Spectra and Structures of d2Molybdenum−Oxo Complexes. Effects of Structural Distortions on Orbital Energies, Two-Electron Terms, and the Mixing of Singlet and Triplet States

2002 ◽  
Vol 41 (26) ◽  
pp. 6973-6985 ◽  
Author(s):  
Ryan E. Da Re ◽  
Michael D. Hopkins
Keyword(s):  
Electronic Spectra ◽  
Triplet States ◽  
Orbital Energies ◽  
Oxo Complexes ◽  
Structural Distortions ◽  
Singlet And Triplet States

The bounding energy for singlet and triplet states of the negative muonium ion

2011 ◽  
Vol 30 (0) ◽  
pp. 240-245 ◽  
Author(s):  
М. Гайсак ◽  
М. Гнатич ◽  
Ю. Федорняк
Keyword(s):  
Triplet States ◽  
Singlet And Triplet States

An ab initio study on some low-lying singlet and triplet states of SbO2+ and quartet states of SbO2

2006 ◽  
Vol 429 (4-6) ◽  
pp. 365-370 ◽  
Author(s):  
Edmond P.F. Lee ◽  
John M. Dyke ◽  
Foo-tim Chau ◽  
Wan-ki Chow ◽  
Daniel K.W. Mok
Keyword(s):  
Ab Initio ◽  
Triplet States ◽  
Ab Initio Study ◽  
Singlet And Triplet States

REDUCED MULTIREFERENCE COUPLED-CLUSTER METHOD AND ITS APPLICATION TO THE PYRIDYNE DIRADICALS

2008 ◽  
Vol 07 (04) ◽  
pp. 805-820 ◽  
Author(s):  
XIANGZHU LI ◽  
JOSEF PALDUS
Keyword(s):  
Molecular Geometry ◽  
External Source ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Triplet States ◽  
Correlation Effects ◽  
Spin Multiplicity ◽  
Triplet Splitting ◽  
Singlet And Triplet States

The reduced multireference (RMR) coupled-cluster (CC) method with singles and doubles (RMR CCSD) that employs a modest-size MR CISD wave function as an external source for the most important (primary) triples and quadruples in order to account for the nondynamic correlation effects in the presence of quasidegeneracy, and which is further perturbatively corrected for the remaining (secondary) triples, RMR CCSD(T), is employed to compute the molecular geometry and the energy of the lowest-lying singlet and triplet states, as well as the corresponding singlet–triplet splitting, for all possible isomers of the m, n-pyridyne diradicals. A comparison is made with earlier results that were obtained by other authors, and the role of the multireference effects for both the geometry and the spin multiplicity of the lowest state, as described by the RMR-type methods, is demonstrated on the example of 2,6- and 3,5-pyridynes.

The trion spin-singlet and -triplet states in ZnSe single quantum wells

2000 ◽  
Vol 214-215 ◽  
pp. 832-836 ◽  
Author(s):  
O Homburg ◽  
P Michler ◽  
K Sebald ◽  
J Gutowski ◽  
H Wenisch ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Triplet States ◽  
Single Quantum ◽  
Spin Singlet ◽  
Singlet And Triplet States
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