Hydride-Bridged NiRh Complexes with Tunable N<sub>3</sub>S<sub>2</sub> Dithiolato Ligands and Their Utilization as Catalysts for Hydrogenation of Aldehydes and CO<sub>2</sub> in Aqueous Media
作者:Bunsho Kure、Ayami Taniguchi、Takayuki Nakajima、Tomoaki Tanase
DOI:10.1021/om300350u
日期:2012.7.9
of [4a]+ and [4b]+ were interestingly tuned by varying the R group of the TACN ligand through trans influence at the NiII center (Ni–NR = 2.188(3) Å ([4a]+), 2.056(2) Å ([4b]+). In fact, [4a]+ was quite stable and capable of reducing benzaldehyde in water, although [4b]+ quickly decomposed under similar conditions. Catalytic hydrogenation of aldehydes and CO2 in water has been established by using
合成了新的N 3 S 2二硫代lato配体1,4-双(2-巯基乙基)-7-R-1,4,7-三氮杂环壬烷(RTACN-S 2 H 2; R = Ts,i Pr),并与Ni II离子产生单核络合物[Ni(RTACN-S 2)](R = Ts(1a),i Pr(1b))。通过用Rh III物种处理,将配合物1a和1b进一步转化为一系列Ni II Rh III异二金属化合物[Ni(RTACN-S 2)RhCp * X] X'(R = Ts,X = Cl,X'= Cl,OTf([ 2a]X'); R = Ts,X = X'= NO 3([ 3a ] NO 3);R =我PR,X =氯,X'=氯,NO 3,PF 6([ 2B ] X'))。配合物[ 3a ] NO 3和[ 2b ] NO 3易于在室温下与H 2(0.1 MPa)在水中反应,得到氢化物桥接的Ni II Rh III双核配合物,[(RTACN-S