Synthesis, characterization and catalytic property of ruthenium–terpyridyl complexes
摘要:
The known compound 4'-(carboxyphenyl)-2,2':6,2 ''-terpyridine (LH) was prepared and complexed with RuCl3 center dot 3H(2)O. The resulting complex [Ru(LH)Cl-3] was then allowed to react separately with 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), triphenylphosphine (PPh3) and 1,2-bis-(diphenylphosphino)ethane (dppe). The compositions of corresponding complexes [Ru(LH)bpyCl](BF4) 1, [Ru(LH)phenCl](BF4) 2, (Ru(LH)(PPh3)(CH3CN)(2)] (BF4)(2) 3 and [Ru(LH)(dppe)Cl](BF4) 4 were assigned on the basis of their FAB-mass spectra, elemental analysis, spectroscopic (IR, NMR) data and X-ray diffraction measurements. The diamagnetic, cationic complexes displayed strong MLCT transitions in the visible region with significant shift in MLCT band energy corresponding to the strength of substituted ligands. The redox behaviour of the complexes was investigated using cyclic voltammetry measurements. Among all the complexes, 3 efficiently catalyzed the synthesis of propargylamine via three components coupling reaction. (C) 2011 Elsevier Ltd. All rights reserved.
New carboxy-functionalized terpyridines as precursors for zwitterionic ruthenium complexes for polymer-based solar cells
摘要:
New carboxy-terpyridines selectively functionalized at the 4-, 4'- and 4"-positions were prepared in a three-step procedure with good yields using, the Krohnke reaction followed by saponification. Their complexation with ruthenium led to symmetric and unsymmetric terpyridinyl zwitterionic complexes. (c) 2006 Elsevier Ltd. All rights reserved.
Wirelike dinuclear ruthenium(II)polyterpyridine complexes based on D–P–A architecture: Experimental and theoretical investigation
作者:Pallavi Singh、Prem Jyoti Singh Rana、Prasenjit Kar
DOI:10.1016/j.jphotochem.2017.03.009
日期:2017.5
prolonged excitedstate, efficient for interfacial electron injection and low electron-hole recombination (LUMO → HOMO of complex) we have synthesized a heteroleptic complexes 1 and 2 based on D–P–A architecture (where P = Photosensitizer, A = Acceptor and D = Donor). The complexes 1 and 2 show the average excitedstate lifetimes (τavg) of 25 ns and 12.67 ns respectively compared to 0.25 ns for [Ru(tpy)2]2PF6
Cyclobutane-based peptides/terpyridine conjugates: Their use in metal catalysis and as functional organogelators
作者:Oriol Porcar-Tost、Bernat Pi-Boleda、Jordi García-Anton、Ona Illa、Rosa M. Ortuño
DOI:10.1016/j.tet.2018.10.064
日期:2018.12
Two new conjugates, hcptpyDP and hcptpyTP, of a terpyridine derivative incorporating artificial peptide moieties, have been synthesized and their use in the preparation of metal catalysts and organogelators has been investigated. Ru(II) complexes derived from these ligands showed electrochemical behavior and activity as catalysts in the epoxidation of olefins similar to that of Beller's catalyst. As
Postsynthetic modification of single Pd sites into uncoordinated polypyridine groups of a MOF as the highly efficient catalyst for Heck and Suzuki reactions
作者:Dapeng Dong、Zhenghua Li、Dedi Liu、Naisen Yu、Haiyan Zhao、Huiying Chen、Jia Liu、Dongping Liu
DOI:10.1039/c8nj00518d
日期:——
highly efficient Pd-HoMOF catalyst. Also, Pd-HoMOF exhibits very high activity in Heck and Suzuki–Miyaura cross-coupling reactions. Moreover, the MOF catalyst displays good thermal stability (up to 400 °C), and it can be recovered and reused for five reaction cycles. The bridging between the MOF structure and homogeneous molecular Pdcatalyst represents a good example in designing highly efficient catalysts
Bio-proton coupled semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient CO<sub>2</sub> reduction
作者:Jibo Liu、Chenyan Guo、Xiaojun Hu、Guohua Zhao
DOI:10.1039/c8gc03066a
日期:——
reduction in a water medium. After 8 h irradiation at −0.9 V potential, the Ru-BNAH/TiO2/Cu2O photoelectrocatalytic interface produced 409.5 μmol formic acid, which was 2.44 times more than that without a protontransfer carrier. In addition, the in situ UV-visible absorption spectra and in situ Raman spectra indicated that the proton transport carrier supplied protons during CO2 reduction. Moreover, the
以高效仿生CO 2光电化学转化为目标,通过共价修饰原位质子转移功能分子催化剂,构建了生物质子耦合的金属-络合物/半导体杂化光电催化界面(Ru-BNAH / TiO 2 / Cu 2 O)。(Ru-BNAH)在TiO 2 / Cu 2 O复合半导体衬底电极的表面上。由于生物质子载体的优异的质子偶联,所制备的Ru-BNAH / TiO 2 / Cu 2在CO 2气氛中的光电流密度在相同条件下,O的光电催化界面是没有质子载体的情况下的两倍。同时,基于金属氧化物基底的优异光敏性,光生电子可以迅速转移到分子催化剂中,以在水介质中有效还原CO 2。在-0.9 V电势下照射8 h后,Ru-BNAH / TiO 2 / Cu 2 O光电催化界面产生409.5μmol甲酸,是没有质子转移载体时的2.44倍。此外,原位紫外可见吸收光谱和原位拉曼光谱表明,质子传输载体在CO 2期间提供了质子。减少。此外,HCOO的产生-在CO