Journal
INORGANIC CHEMISTRY
Volume 56, Issue 21, Pages 13286-13292Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.7b02074
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Funding
- SERB, India [EMR/2016/000614, SR/S1/IC-50/2012]
- DST, India [SR/NM/TP-13/2016]
- CSIR, India [01(2861)/16/EMR-II]
- UGC (CAS), India (UPE)
- UGC, India
- Pune University, India
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The octahedral cage assembly [(Co6L8CI6)-L-II-C-1(H2O)(6)]C1=l(6) has been synthesized in a single-step reaction by using a polypyridyl-functionalized tripodal silane ligand. The electrochemical behavior of the cage in water exhibits the pH dependence of potential as well as catalytic current indicating the possible involvement of proton -coupled electron transfer in H-2 evolution. Electrocatalytic hydrogen evolution from an aqueous buffered solution gave a turnover frequency of 16 h(-1). Further, this cage assembly has been explored as a photocatalyst (blue light irradiation lambda 469 nm) for the evolution of H-2 from water in the presence of Ru(bpy)(3)(2+) as a photosensitizer and ascorbic acid as a sacrificial electron donor. This catalytic reaction is found to be pseudo first order with a turnover frequency of 20.50 h(-1).
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