Chemically reversible reactions of hydrogen sulfide with metal phthalocyanines.
Chemically reversible reactions of hydrogen sulfide with metal phthalocyanines.
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DOI:
10.1021/ic500664c
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发表时间:
2014-08-04
影响因子:
4.6
通讯作者:
Pluth MD
中科院分区:
文献类型:
--
作者:
Hartle MD;Sommer SK;Dietrich SR;Pluth MD
Hydrogen sulfide (H2S) is an important signaling molecule that exerts action on various bioinorganic 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 [CoIPc]−, which can be reoxidized to CoPc by air. Taken together, these results demonstrate the chemically reversible reaction of HS– with metal phthalocyanine complexes and highlight the importance of H2S protonation state in understanding the reactivity profile of H2S with biologically relevant metal scaffolds. The protonation state of H2S influences its reactivity with different metal phthalocyanine (Pc) complexes. Both ZnPc and CoPc react with H2S in a chemically reversible manner, with redox-inactive ZnPc binding HS− and redox-active CoPc undergoing reduction. The [ZnPc-SH]− product can be reverted to ZnPc by protonation, and [CoIPc]− can be redoxidized to CoPc with air.
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影响因子:
7.3
作者:
Mustafa AK;Gadalla MM;Snyder SH
通讯作者:
Snyder SH
影响因子:
56.9
作者:
Blackstone, E;Morrison, M;Roth, MB
通讯作者:
Roth, MB
影响因子:
4.6
作者:
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通讯作者:
James, Brian R.
DOI:
10.1073/pnas.0904082106
发表时间:
2009-12-29
影响因子:
11.1
作者:
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通讯作者:
Decreau, Richard A.
影响因子:
4.6
作者:
CLACK, DW;YANDLE, JR
通讯作者:
YANDLE, JR