189190-61-2Relevant academic research and scientific papers
Highly polarized ruthenium alkynyls with nitrothienyl substituents
Xia, Aibing,Selegue, John P.
, p. 219 - 224 (2002)
Me3SiCCC4H2S-5-NO2 was synthesized in good yield by palladium-catalyzed cross-coupling of ethynyltrimethylsilane and 2-bromo-5-nitrothiophene or 2-iodo-5-nitrothiophene. Reactions of Me3SiCC(C4H2S)NO2 with a series of ruthenium chloride complexes [RuClLL′(Cp′)] gave the alkynyls [Ru(2-CCC4H2S-5-NO2) LL′(Cp′)] (L, L′=CO, PMe2Ph or PPh3; Cp′=C5H5 or C5Me5). These metal complexes, each with a strongly electron-donating metal center at one end and an electron-accepting organic substituent at the other end of a π-conjugated chain, are strongly polarized and are expected to demonstrate non-linear optical activity.
Mono(η5-cyclopentadienyl)metal(II) complexes with thienyl acetylide chromophores: Synthesis, electrochemical studies, and first hyperpolarizabilities
Silva, Tiago J. L.,Mendes, Paulo J.,Santos, Ana M.,Garcia, M. Helena,Robalo, M. Paula,Ramalho, J.P. Prates,Carvalho, A.J. Palace,Buchert, Marina,Wittenburg, Christian,Heck, Jürgen
, p. 4655 - 4671 (2014)
A series of mono(η5-cyclopentadienyl)metal-(II) complexes with nitro-substituted thienyl acetylide ligands of general formula [M(η5 -C5H5)(L)(C≡C{C4H2S}nNO2)] (M = Fe, L = K
Syntheses and reactivity of ruthenium σ-pyridylacetylides
Wu, Iuan-Yuan,Lin, Jiann T.,Luo, Jimmy,Sun, Shih-Sheng,Li, Chyi-Shiun,Lin, Kuan J.,Tsai, Chiitang,Hsu, Chia-Chen,Lin, Jiunn-Lin
, p. 2038 - 2048 (2008/10/08)
Ruthenium σ-acetylides containing a dangling pyridine were synthesized from the reactions of CpRu(L)2Cl (L = PPh3, 1/2 (C5H4PPh2)2Fe) with 4-ethynylpyridine, (E)-1-(4-ethynylphenyl)2-(4-pyridyl)ethylene, or 4-(ethynylphenyl)(4-pyridyl)acetylene in the presence of NH4+PF6- followed by deprotonation with a base. The dangling pyridine can be protonated, methylated, or ligated to tungsten carbonyl fragments. The ruthenium donor to the pyridinium acceptor charge-transfer absorption appears at longer wavelength as the conjugation chain becomes longer. The quadratic hyperpolarizabilities of the methylated derivatives were determined using the hyper Rayleigh scattering method. X-ray analysis was employed to examine the structure of the dinuclear complex Ru(C≡CC5H4N{W(CO)4(PPh 3)})(η2-dppf)(η5-C5H 5) (dppf = 1,1′-bis(diphenylphosphino)ferrocene).
