Silva, Tiago J. L.Mendes, Paulo J.Garcia, M. HelenaRobalo, Maria PaulaRamalho, J. P. PratesCarvalho, A. J. PalaceBuechert, MarinaWittenburg, ChristianHeck, Juergen2014-09-232014-09-232013-07SILVA, Tiago J. L.; [et al] - Benzo[c]thiophene Chromophores Linked to Cationic Fe and Ru Derivatives for NLO Materials: Synthesis Characterization and Quadratic Hyperpolarizabilities. European Journal of Inorganic Chemistry. Vol. 2013, nr. 20 (2013), p. 3506-3517.1434-19481099-0682http://hdl.handle.net/10400.21/38385-Monocyclopentadienyliron(II)/ruthenium(II) complexes of the general formula [M(5-C5H5)(PP)(L1)][PF6] {M = Fe, PP = dppe; M = Ru, PP = dppe or 2PPh3; L1 = 5-[3-(thiophen-2-yl)benzo[c]thiophenyl]thiophene-2-carbonitrile} have been synthesized and studied to evaluate their molecular quadratic hyperpolarizabilities. The compounds were fully characterized by NMR, FTIR and UV/Vis spectroscopy and their electrochemical behaviour studied by cyclic voltammetry. Quadratic hyperpolarizabilities () were determined by hyper-Rayleigh scattering measurements at a fundamental wavelength of 1500 nm. Density functional theory calculations were employed to rationalize the second-order non-linear optical properties of these complexes.engRutheniumIronSulfur heterocyclesNonlinear OpticsHyperpolarizabilitiesjournal article10.1002/ejic.201300048