Excitation Energies for Transition Metal Compounds from Time-Dependent Density Functional Theory. Applications to MnO4-, Ni(CO)4, and Mn2(CO)10

1999 ◽  
Vol 103 (34) ◽  
pp. 6835-6844 ◽  
Author(s):  
S. J. A. van Gisbergen ◽  
J. A. Groeneveld ◽  
A. Rosa ◽  
J. G. Snijders ◽  
E. J. Baerends

RSC Advances ◽  
2015 ◽  
Vol 5 (78) ◽  
pp. 63318-63329 ◽  
Author(s):  
Thomas A. Niehaus ◽  
Thomas Hofbeck ◽  
Hartmut Yersin

A series of 17 platinum(ii) and iridium(iii) complexes have been investigated theoretically and experimentally to elucidate the charge-transfer character in emission from the lowest triplet state. TDDFT is found to be surprisingly accurate.



2005 ◽  
Vol 04 (01) ◽  
pp. 265-280 ◽  
Author(s):  
SUSUMU YANAGISAWA ◽  
TAKAO TSUNEDA ◽  
KIMIHIKO HIRAO

We investigated the electron configurations that are dominant in excited states of molecules in time-dependent density functional theory (TDDFT). By taking advantage of the discussion on off-diagonal elements in the TDDFT response matrix (Appel et al., Phys Rev Lett, 90, 043005, 2003), we can pick up electron transitions that contribute to an excitation of interest by making use of the diagonal elements of the TDDFT matrix. We can obtain approximate excitation energies by calculating a TDDFT submatrix, which is contracted for a list of collected transitions. This contracted TDDFT was applied to the calculation of excitation energies of the CO molecule adsorbing Pt 10 cluster and some prototype small molecules. Calculated results showed that a TDDFT excitation energy is dominated by a few electron configurations, unless severe degeneracy is involved.





1997 ◽  
Vol 264 (6) ◽  
pp. 573-578 ◽  
Author(s):  
Rüdiger Bauernschmitt ◽  
Marco Häser ◽  
Oliver Treutler ◽  
Reinhart Ahlrichs


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