Chemically Reversible Reactions of Hydrogen Sulfide with Metal Phthalocyanines

被引：59

作者：

Hartle, Matthew D. ^{[1
]}

Sommer, Samantha K. ^{[1
]}

Dietrich, Stephen R. ^{[1
]}

Pluth, Michael D. ^{[1
]}

机构：

[1] Univ Oregon, Inst Mat Sci, Dept Chem & Biochem, Eugene, OR 97403 USA

来源：

INORGANIC CHEMISTRY | 2014年 / 53卷 / 15期

关键词：

COBALT PHTHALOCYANINE; H2S; COMPLEXES; OXIDATION; THIOL; COORDINATION; DISULFIDES; ELECTRODES; REDUCTION; CHEMISTRY;

D O I：

10.1021/ic500664c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Hydrogen sulfide (H2S) is an important signaling molecule that exerts action on various bio-inorganic targets. Despite this importance, few studies have investigated the differential reactivity of the physiologically relevant H2S and HS- protonation states with metal complexes. Here we report the distinct reactivity of H2S and HS- with zinc(II) and cobalt(II) phthalocyanine (Pc) complexes and highlight the chemical reversibility and cyclability of each metal. ZnPc reacts with HS-, but not H2S, to generate [ZnPc-SH](-), which can be converted back to ZnPc by protonation. CoPc reacts with HS-, but not H2S, to form [(CoPc)-Pc-I](-), which can be reoxidized to CoPc by air. Taken together, these results demonstrate the chemically reversible reaction of HS- with metal phthalocyarnine complexes and highlight the importance of H2S protonation state in understanding the reactivity profile of H2S with biologically relevant metal scaffolds.

引用

页码：7800 / 7802

页数：3

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