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- W2023342631 abstract "Coordination to the “Os3(CO)11” cluster core of substituted styrylpyridines such as trans-4-(4‘-NMe2-styryl)pyridine (L1), trans-4-(4‘-t-Bu-styryl)pyridine (L2), trans-4-(4‘-CF3-styryl)pyridine (L3), or trans,trans-4-(4‘-NMe2-phenyl-1,3-butadienyl)pyridine (L4) produces an enhancement of their quadratic hyperpolarizability, βEFISH, measured by the solution-phase dc electric-field-induced second harmonic (EFISH) generation method. This effect is due either to a red-shift of the intraligand charge-transfer (ILCT) transition upon coordination (when the substituent in para position is a strong electron donor) or to a metal-to-ligand charge-transfer (MLCT) transition (when the substituent is a strong electron acceptor). In the latter case the quadratic hyperpolarizability has a negative sign, due to the negative value of Δμeg. Therefore the “Os3(CO)11” cluster core displays an ambivalent acceptor or donor role. Some of the complexes investigated in this study show significant values (between 500 × 10-48 and 900 × 10-48 esu) of the product μβ0." @default.
- W2023342631 created "2016-06-24" @default.
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- W2023342631 date "2004-01-13" @default.
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- W2023342631 title "Effect of the Coordination to the “Os<sub>3</sub>(CO)<sub>11</sub>” Cluster Core on the Quadratic Hyperpolarizability of <i>trans</i>-4-(4‘-X-styryl)pyridines (X = NMe<sub>2</sub>, <i>t</i>-Bu, CF<sub>3</sub>) and <i>trans,trans</i>-4-(4‘-NMe<sub>2</sub>-phenyl-1,3-butadienyl)pyridine" @default.
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- W2023342631 doi "https://doi.org/10.1021/om034086r" @default.
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