Syntheses and structures’ influence on the nonlinear optical properties of o-ferrocenylbenzoate compounds
摘要:
Two complexes containing o-ferrocenylbenzoate [ o- OOCH(4)C(6)Fc, Fc = (eta(5)-C5H5)Fe(eta(5)-C5H4)] components: {[Pb(eta(2)-o-OOCH(4)C(6)Fc)(2)(phen)](NO3)} (phen = phenanthroline) (1) and {[Zn(eta(2)-o-OOCH(4)C(6)Fc)(2)(bpe)](CH3OH)}(n) (bpe = 1,2-bis(4-pyridyl)ethene) (2) have been synthesized and structurally characterized by single crystal X-ray diffraction. 1 gives a discrete mononuclear framework, 2 features an in. finite 1-D chain structure constructed by the bpe linking two adjacent zinc (II) ions. The third-order nonlinear optical (NLO) properties of complexes 1, 2 and the reactant o-NaOOCH(4)C(6)Fc were determined by Z-scan techniques in DMF solution. The results show that the structures of complexes have great impact on NLO properties. Complex 1 and o-NaOOCH(4)C(6)Fc display self-defocusing behaviors, while complex 2 exhibits strong self-focusing effect. The solution-state differential pulse voltammograms of complexes 1, 2 and o-NaOOCH(4)C(6)Fc were investigated as well. The results reveal that the half-wave potential of the ferrocenyl moieties is strongly influenced by the Pb(II) or Zn(II) ions in complexes 1 and 2. (C) 2008 Published by Elsevier B.V.