A ruthenium water oxidation catalyst containing a bipyridine glycoluril ligand,Dalton Transactions

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A ruthenium water oxidation catalyst containing a bipyridine glycoluril ligand
Dalton Transactions ( IF 3.5 ) Pub Date : 2017-09-12 00:00:00 , DOI: 10.1039/c7dt02485a
Vishwanath S. Mane _{1,

2,

3,

4} , Avinash S. Kumbhar _{1,

2,

3,

4} , Randolph P. Thummel _{5,

6,

7,

8}

Affiliation

A mononuclear ruthenium complex [Ru(tpy)(bpg)H₂O]²⁺ bearing a bipyridine glycoluril where bpg = 4b,5,7,7a-tetrahydro-4b,7a-nepiminomethanoimino-6H-imidazo[4,5-f][1,10]phenanthro-line-6,13-dione acts as a robust water oxidation catalyst (WOC) at pH = 1 using Ce(IV) as a sacrificial oxidant. The turn over number (TON) for water oxidation is found to be ∼5 times higher than the parent complex [Ru(tpy)(bpy)H₂O]²⁺ where tpy = 2,2′:6′,2′′-terpyridine; bpy = 2,2′-bipyridine. The presence of intermolecular H-bonding groups and the electronic effect of the functionalized bipyridine ligand may play a significant role in water oxidation.

中文翻译：

含联吡啶甘脲配体的钌水氧化催化剂

带有联吡啶甘脲的单核钌络合物[Ru（tpy）（bpg）H ₂ O] ²⁺，其中bpg = 4b，5,7,7a-四氢-4b，7a-nepiminomethanoimino-6 H-咪唑并[4,5- f ] [1,10]菲咯啉-6,13-二酮使用Ce（IV）作为牺牲氧化剂，在pH = 1时起稳健的水氧化催化剂（WOC）的作用。发现水氧化的周转数（TON）是母体[Ru（tpy）（bpy）H ₂ O] ^2+的〜5倍，其中tpy = 2,2'：6'，2'' -三吡啶 bpy = 2,2'-联吡啶。分子间氢键基团的存在和功能化联吡啶配体的电子效应可能在水氧化中起重要作用。

更新日期：2017-09-18

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