Synthesis of new Fe(II) and Ru(II) eta(5)-monocyclopentadienyl compounds showing significant second order NLO properties
| Autor: | Juergen Heck, Milan Narendra, Andreia Valente, M. Paula Robalo, Tiago J. L. Silva, Manuel Abreu, Sophie Royer, Paulo J. Mendes, M. Helena Garcia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Formamide
Ray Crystal-Structure 2ND-Harmonic Generation Kurtz powder technique chemistry.chemical_element Nonlinear-Optical Properties Hyper-Rayleigh scattering Cyclopentadienyl complexes Electrochemistry Biochemistry Second-order nonlinear optical Quadratic hyperpolarizabilities Powder Technique Hyperpolarizabilities Inorganic Chemistry chemistry.chemical_compound Computational chemistry Materials Chemistry Organometallic Compounds Physical and Theoretical Chemistry Group 2 organometallic chemistry Malononitrile Scattering Organic Chemistry Second-harmonic generation Ruthenium Crystallography chemistry Metal-Complexes Cyclic voltammetry Organic Materials Derivatives |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | A series of new ruthenium(II) complexes of the general formula [Ru(η 5 -C 5 H 5 )(PP)(L)][PF 6 ] (PP = DPPE or 2PPh 3 , L = 4-butoxybenzonitrile or N-(3-cyanophenyl)formamide) and the binuclear iron(II) complex [Fe(η 5 -C 5 H 5 )(PP)(μ-L)(PP)(η 5 -C 5 H 5 )Fe][PF 6 ] 2 (L = ( E )-2-(3-(4-nitrophenyl)allylidene)malononitrile, that has been also newly synthesized) have been prepared and studied to evaluate their potential in the second harmonic generation property. All the new compounds were fully characterized by NMR, IR and UV–Vis spectroscopies and their electrochemistry behaviour was studied by cyclic voltammetry. Quadratic hyperpolarizabilities ( β ) of three of the complexes have been determined by hyper-Rayleigh scattering (HRS) measurements at fundamental wavelength of 1500 nm and the calculated static β 0 values are found to fall in the range 65–212 × 10 −30 esu. Compound presenting β 0 = 212 × 10 −30 esu has revealed to be 1.2 times more efficient than urea standard in the second harmonic generation (SHG) property, measured in the solid state by Kurtz powder technique, using a Nd:YAG laser (1064 nm). |
| Databáze: | OpenAIRE |
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