Experimental and Theoretical Evaluation of Four NLO‐Active Divalent Transition‐Metal Complexes Supported by an Enantiomerically Pure Tetradentate Schiff Base Ligand

Autor: Salvador Celedón, Paul Hamon, Vania Artigas, Mauricio Fuentealba, Samia Kahlal, Isabelle Ledoux‐Rak, David Carrillo, Jean‐Yves Saillard, Carolina Manzur, Jean‐René Hamon
Přispěvatelé: Universidad de Las Américas [Ecuador] (UDLA), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Pontificia Universidad Católica de Valparaíso (PUCV), Université Paris-Saclay, Financial support from the Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT), Chile (grant 1090310) and FONDEQUIP EQM130154 and EQM120095], the Vicerrectoría de Investigación y Estudios Avanzados, Pontificia Universidad Católica de Valparaíso, Chile (VRIEA-PUCV), the Centre National de la Recherche Scientifique (CNRS) and the Université de Rennes 1 is gratefully acknowledged. S.C. thanks VRIEA-PUCV for a postdoctoral financing.
Rok vydání: 2022
Předmět:
Zdroj: European Journal of Inorganic Chemistry
European Journal of Inorganic Chemistry, 2022, 2022 (34), ⟨10.1002/ejic.202200478⟩
ISSN: 1099-0682
1434-1948
Popis: International audience; This paper reports on a series of five chiral Schiff base push-pull compounds derived from enantiomerically pure (1R,2R)-(−)-1,2-diaminocyclohexane. The NiII, CuII, ZnII and PdII complexes supported by a ferrocene-containing unsymmetrically-substituted N2O2 quadridentate Schiff base ligand were prepared via template reactions and isolated in 74-87% yields. A combination of EA, IR, UV/vis and 1H/13C{1H} NMR spectroscopy, HRMS spectrometry, cyclic voltammetry and single-crystal X-ray analysis (for the proligand 2 and its NiII derivative 3), together with computational methods (DFT and TD-DFT) was used to fully characterize and study the properties of all products. Both 2 and 3 crystallize in the orthorhombic non-centrosymmetric space group P212121, with two (R,R)-(−)-chiral carbon atoms in their structure. Second-order nonlinear polarizabilities β have been measured by using Harmonic Light Scattering at 1.91 μm, with the Pd(II) species showing the higher NLO response of 460 x 10-30 esu.
Databáze: OpenAIRE
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