Photo- and Electrocatalytic H<sub>2</sub>Production by New First-Row Transition-Metal Complexes Based on an Aminopyridine Pentadentate Ligand
作者:Arnau Call、Zoel Codolà、Ferran Acuña-Parés、Julio Lloret-Fillol
DOI:10.1002/chem.201303317
日期:2014.5.12
metal complexes of general formula [M(CF3SO3)(Py2Tstacn)][CF3SO3], (M=Fe (1Fe), Co (1Co) and Ni (1Ni)) are reported. Complex 1Co presents excellent H2 photoproduction catalytic activity when using [Ir(ppy)2(bpy)]PF6 (PSIr) as photosensitiser (PS) and Et3N as electron donor, but 1Ni and 1Fe result in a low activity and a complete lack of it, respectively. On the other hand, all three complexes have excellent
五齿配体1,4-二(甲基吡啶基)-7(对甲苯磺酰基)1,4,7-三氮杂环壬烷(Py 2 Ts tacn)及其通式为[M(CF 3 SO 3(PY)2 TS TACN)] [CF 3 SO 3,](M = Fe(上1的Fe),钴(1钴)和Ni(1镍被报告))。复杂1共同呈现优良ħ 2使用[的Ir(ppy)当光生催化活性2 PF(联吡啶)] 6(PS铱)作为光敏剂(PS),Et 3 N作为电子供体,但是1 Ni和1 Fe分别导致活性低和完全缺乏。另一方面,当使用三氟乙酸(TFA)作为质子源时,对于1 Co(0.59 V vs. SCE)和1 Ni(0.56 V vs. SCE )具有适度的超电势,这三种络合物在乙腈中均具有出色的电催化质子还原活性。)和1 Fe更高(0.87 V vs. SCE)。在CH 3 CN / H 2 O / Et 3 N(3:7:0.2)的条件下,1 Co(5μM),