Ruthenium terpyridine complexes incorporating azo-imine based ancillary ligands. Synthesis, crystal structure, spectroelectrochemical properties and solution reactivities †
作者:Biplab Mondal、Mrinalini G. Walawalkar、Goutam Kumar Lahiri
DOI:10.1039/b005789o
日期:——
Rutheniumterpyridine complexes of the type [RuII(trpy)(L)(X)][ClO4]n1–15 [trpy = 2,2′∶6,2′′-terpyridine; L = NC5H4NNC6H4(R), R = H, m-Me, m-Cl, p-Me or p-Cl; X = Cl−, n = 1 (1–5); H2O, n = 2 (6–10) or OH−, n = 1 (11–15)] have been synthesized. The single crystal structures of 1 and 6 were determined. Complex 4 develops in two possible isomeric forms whereas all other complexes stabilise preferentially
Redox-induced reversible intramolecular carbon–nitrogen bond formation of an azopyridylruthenium complex: Control of carbonyl ligand photoreactivity caused by structural change of the complex
作者:Dai Oyama、Bisa Mun、Tsugiko Takase
DOI:10.1016/j.jorganchem.2015.09.017
日期:2015.12
Intramolecular carbon–nitrogen bond formation between a carbonyl and proximal azopyridine ligand by ligand-based reduction led to the formation of a novel ruthenium complex containing a bidentate carbamoyl ligand. Reversible C–N bond formation and cleavage reactions were confirmed by chemical and electrochemical redox reactions. The change in character of the CO moiety based on intramolecular structural
Exclusively Ligand-Mediated Catalytic Dehydrogenation of Alcohols
作者:Debabrata Sengupta、Rameswar Bhattacharjee、Rajib Pramanick、Santi Prasad Rath、Nabanita Saha Chowdhury、Ayan Datta、Sreebrata Goswami
DOI:10.1021/acs.inorgchem.6b01310
日期:2016.10.3
liquid fuels like alcohols is described in this report. The catalyst is a nickel(II) complex of 2,6-bis(phenylazo)pyridine ligand (L), which possesses the above requisite with excellent catalytic efficiencies for controlled dehydrogenation of alcohols using ligand-based redox couple. Mechanistic studies supported by densityfunctional theory calculations revealed that the catalytic cycle involves hydrogen
本报告介绍了一种高效的新型催化剂的设计,该催化剂可以模拟酶催化液体燃料(如醇)的脱氢途径。该催化剂是2,6-双(苯基偶氮)吡啶配体(L)的镍(II)配合物,具有上述要求,并具有优异的催化效率,用于使用基于配体的氧化还原对控制醇的脱氢。密度泛函理论计算所支持的机理研究表明,催化循环涉及通过量子机械隧穿进行的氢原子转移,在300 K时具有显着的k H / k D同位素效应,为12.2±0.1。氢化中间体化合物[Ni II Cl 2(H 2个L)],经分离和表征。该结果在设计廉价且有效的用于乙醇氧化和氢存储的富含地球的金属催化剂的背景下是有希望的。
Platinum complexes of diazo ligands. Studies of regioselective aromatic ring amination, oxidative halogen addition and reductive halogen elimination reactions
2-(Arylazo)pyridine ligands, L1a-1c react with the salt K2[PtCl4] to give the mononuclear complexes [PtCl2(L1)](1), which readily react with ArNH2 to yield the monochloro complexes of type [PtCl(L2)](HL2= 2-[(2-(arylamino)phenyl)azo]pyridine)(2) via regioselective ortho-amine fusion at the pendent aryl ring of coordinated L1. Oxidative addition of the electrophiles Y2(Y = Cl, Br, I) to the square-planar
Carving Out Pores in Redox‐Active One‐Dimensional Coordination Polymers
作者:Naomi E. Clayman、Mary Anne Manumpil、Daiki Umeyama、Andrey E. Rudenko、Hemamala I. Karunadasa、Robert M. Waymouth
DOI:10.1002/anie.201807506
日期:2018.10.26
Reduction of the insulating one‐dimensional coordination polymer [Cu(abpy)PF6]n, 1 a(PF6), (abpy=2,2′‐azobispyridine) yields the conductive, porous polymer [Cu(abpy)]n, 2 a. Pressed pellets of neutral 2 a exhibit a conductivity of 0.093 S cm−1 at room temperature and a Brunauer–Emmett–Teller (BET) surface area of 56 m2 g−1. Fine powders of 2 a have a BET surface area of 90 m2 g−1. Cyclic voltammetry
绝缘的一维配位聚合物[Cu(abpy)PF 6 ] n,1 a(PF 6)(abpy = 2,2'-偶氮二吡啶)的还原会生成导电的多孔聚合物[Cu(abpy)] n,2个。压制的中性颗粒2 a在室温下的电导率为0.093 S cm -1,Brunauer-Emmett-Teller(BET)的表面积为56 m 2 g -1。的细粉末2具有90米的BET表面积2 克-1。循环伏安法表明将1 a(PF 6)还原为2 a是准可逆的,表明电荷容易通过大块材料转移。可以通过改变阳离子[Cu(abpy)X] n中的抗衡阴离子X的大小来控制还原聚合物2的BET表面积。用X = Br(2 b)或BAr F(2 c ; BAr F =四(3,5-双(三氟甲基)苯基))还原[Cu(abpy)X] n,得到[Cu(abpy)] n表面积分别为60和200 m 2 g -1的聚合物。