Syntheses, characterization and second-order nonlinear optical behavior of new ferrocenyl-terminated phenylethenyl oligomers with a pendant nitro group

Abstract

Several ferrocenyl-based oligomers with a pendant nitro group have been synthesized and characterized. The crystal structure of the compound (E)-(η⁵-C₅H₅)Fe(η⁵-C₅H₄)–CHCHC₆H₄NO₂ is described, showing a centrosymmetric arrangement as already proposed by several authors. The nonlinear optical properties of the compounds have been measured by means of the HRS technique, showing the highest β values for any organometallic compound with a pendant nitro group reported to date.