Experimental and theoretical EPR study of Jahn-Teller-active [HIPTN(3)N]MoL complexes (L = N(2), CO, NH(3)).
Experimental and theoretical EPR study of Jahn-Teller-active [HIPTN(3)N]MoL complexes (L = N(2), CO, NH(3)).
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DOI:
10.1021/ja1004619
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发表时间:
2010-06-30
影响因子:
15
通讯作者:
Hoffman, Brian M.
中科院分区:
文献类型:
--
作者:
McNaughton, Rebecca L.;Roemelt, Michael;Chin, Jia Min;Schrock, Richard R.;Neese, Frank;Hoffman, Brian M.
The trigonally symmetric Mo(III) coordination compounds [HIPTN3N]MoL (L = N2, CO, NH3; [HIPTN3N]Mo = [(3,5-(2,4,6-i-Pr3C6H2)2C6H3NCH2CH2)3N]Mo) are low-spin d3, S = 1/2) species that exhibit a doubly-degenerate 2E ground state susceptible to a Jahn-Teller (JT) distortion. The EPR spectra of all three complexes and their temperature and solvent dependences are interpreted within a formal ‘2-orbital’ model that reflects the ground-state configuration, describes the vibronic interactions that lead to the JT distortions, and addresses whether these complexes exhibit static or dynamic JT distortions. The electronic and vibronic properties of these complexes are then analyzed through ab initio quantum chemical computations. It is not possible to interpret the spectroscopic properties of the orbitally degenerate [Mo]L with DFT methods, so we have resorted to multireference wavefunction approaches, the entry level of which is the complete active space self-consistent field (CASSCF) method. Overall the experimental and computational studies provide new insights into the role of trigonal coordination, as enforced by the [HIPTN3N]3− ligand, in activating the Mo ion for the binding and reduction of N2.
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影响因子:
4.4
作者:
AMMETER, JH;SWALEN, JD
通讯作者:
SWALEN, JD
影响因子:
4.4
作者:
Kello, V;Sadlej, AJ;Hess, BA
通讯作者:
Hess, BA
影响因子:
15
作者:
McNaughton, Rebecca L.;Chin, Jia Min;Hoffman, Brian M.
通讯作者:
Hoffman, Brian M.
DOI:
10.1039/dt9750002443
发表时间:
1975-01-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
影响因子:
--
作者:
GERLOCH, M;MCMEEKING, RF
通讯作者:
MCMEEKING, RF
影响因子:
1.7
作者:
Eichkorn, K;Weigend, F;Ahlrichs, R
通讯作者:
Ahlrichs, R