Syntheses and characterization of ferrocenylthiocarboxylate-containing coordination compounds for nonlinear optics
摘要:
Four metal-organic coordination compounds containing ferrocenylthiocarboxylate components, [Cd-2(eta(2)-SOCFc) (2)(eta(1)-mu(2)-SOCFc)(2)(4,4'-bpy)](n) (1), [Cd(SOCFc)(2)(tmp)](n) (tmp = 4,40-trimethylene-dipyridine) (2) [Zn(SOCFc)(2)(2,2'-bpy)] (3), and {[Hg(SOCFc)(2)(phen)] center dot (0.5CH(3)OH)} (4) (Fc = (eta(5)-C5H5) Fe(eta(5)-C5H4)), have been prepared in search of good nonlinear optical (NLO) materials. Investigation of the NLO properties shows that Hg-containing compound 4 exhibits very strong third-order NLO absorptive and refractive effects. The NLO absorptive coefficient alpha(2) value (2.11 x 10(10) mW (1)) is larger than those of all the reported ferrocenylcarboxylate-containing coordination compounds and comparable to the well-performing Hg-containing complexes. Additionally, we further analyzed their NLO behaviors through studying electrochemical properties of the four compounds. (C) 2008 Published by Elsevier B.V.