79109-69-6Relevant articles and documents
Experimental and theoretical studies of charge delocalization in biruthenium-alkynyl complexes bridged by thiophenes
Ou, Ya-Ping,Xia, Jianlong,Zhang, Jing,Xu, Meng,Yin, Jun,Yu, Guang-Ao,Liu, Sheng Hua
, p. 2023 - 2032 (2013)
A series of binuclear ruthenium-alkynyl complexes that are bridged by thiophene groups (thiophene, bithiophene, and terthiophene) have been synthesized. All of these complexes have been well-characterized by NMR spectroscopy, X-ray diffraction, and elemen
Five-Membered Heterocycles as Linking Units in Strongly Coupled Homobimetallic Group 8 Metal Half-Sandwich Complexes
Pfaff, Ulrike,Hildebrandt, Alexander,Korb, Marcus,Schaarschmidt, Dieter,Rosenkranz, Marco,Popov, Alexey,Lang, Heinrich
, p. 2826 - 2840 (2015)
The synthesis and characterization of a series of alkynyl half-sandwich complexes of type 2,5-((η5-C5H5)(dppe)MC≡C)2-cC4H2E (E = O (11), S (12); M = Fe (a), Ru (b); dppe = 1,2-bis(diphenylphosphino)ethane) are reported. The molecular structures of 11a and 12a,b in the solid state have been determined by single-crystal X-ray diffraction. The influence of different metals and the variation of the heterocyclic bridge on the electronic interactions between the terminal redox-active units in 11a,b and 12a,b was studied using electrochemical (cyclic and square wave voltammetry) and spectroelectrochemical (in situ UV-vis/NIR, ESR, and IR spectroscopy) methods and DFT calculations. Electrochemical studies demonstrated that mixed-valent species 11a,b+ and 12a,b+ exhibit high thermodynamic stabilities with respect to disproportionation (KC values from 6.87 × 104 to 9.33 x 105). In situ spectroelectrochemical ESR and IR measurements display delocalization of the single electron between the metal centers M/M+, revealing that within this setup five-membered heterocycles are well suited to promote intramolecular metal-metal interactions. Furthermore, the UV-vis/NIR spectra of mixed-valent 11a,b+ and 12a,b+ show intense, narrow, and nonsolvatochromic π(dπ) → π(dπ) absorptions in the NIR region with a high-energy shoulder. Both experimental and computational results suggest that at least two thermally accessible rotation conformers of the organometallic termini of 11a,b and 12a,b contribute to the electronic spectra of these compounds. One of the conformers can clearly be characterized as a delocalized class III system, while the other shows a more localized behavior. (Figure Presented).
Butterfly-Like Triarylamines with High Hole Mobility and On/Off Ratio in Bottom-Gated OFETs
Devibala, Panneerselvam,Balambiga, Balu,Mohamed Imran, Predhanekar,Bhuvanesh, Nattamai S. P.,Nagarajan, Samuthira
supporting information, p. 15375 - 15381 (2021/10/06)
Highly π-extended butterfly-shaped triarylamine dyads with aryleneethynylene spacer were constructed using an efficient synthetic route. These aryleneethynylene-bridged dyads are highly fluorescent and exhibited high HOMO levels, and low bandgaps, which a
Amorphous formability and temperature-sensitive luminescence of lanthanide coordination glasses linked by thienyl, naphthyl, and phenyl bridges with ethynyl groups
Hirai, Yuichi,Da Rosa, Pedro Paulo Ferreira,Nakanishi, Takayuki,Kitagawa, Yuichi,Fushimi, Koji,Hasegawa, Yasuchika
supporting information, p. 322 - 326 (2017/05/09)
The glass-transition properties and temperature-sensitive luminescence of lanthanide (Ln(III)) coordination compounds are reported. The glass formability was systematically provided by incorporation of bent-angled phosphine oxide (2,5-bis-(diphenylphosphorylethynyl)thiophene: dpet, 2,7-bis(diphenylphosphorylethynyl)naphthalene: dpen, 1,3-bis(diphenylphosphorylethynyl)benzene: m-dpeb) ligands with thienyl, naphthyl, phenyl cores, and ethynyl groups. The glass-transition points were clearly identified for all Ln(III) coordination compounds (Tg = 65-87°C). The Tb(III)/Eu(III) mixed coordination glass [Tb,Eu(hfa)3(m-dpeb)]3 (hfa: hexafluoroacetylacetonate) also showed green, yellow, orange, and red photoluminescence depending on temperature.
