Formation of a high valent di-μ-oxo manganese dimer in aqueous solution

Rajesh Manchanda; Gary W Brudvig; Robert H. Crabtree; Joseph E. Sarneski; Mary Didiuk

doi:10.1016/S0020-1693(00)92318-1

Formation of a high valent di-μ-oxo manganese dimer in aqueous solution

Rajesh Manchanda, Gary W Brudvig, Robert H. Crabtree, Joseph E. Sarneski, Mary Didiuk

Yale University

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

We find an unusual example in which different clusters can be isolated from the same reaction mixture depending on the choice of counter-ion. The complex [(bipy)₂Mn(III)(μ-O)₂Mn(IV)(bipy)₂]³⁺ (1) (bipy=2,2′-dipyridyl) is isolated from Mn(II) and permanganate in acetate buffer with ClO₄ ^-, but [(bipy)(H₂O)Mn(III)(μ-O)(μ-OAc)₂Mn(III)(bipy)(H₂O)]²⁺ (2) with NO₃ ^-. 1e^-/2H⁺ or 1e^-/1H⁺ proton-coupled electron transfer chemistry is found for 2 according to the type of buffer used. The new complex [(bipy)(H₂O)Mn(III)(μ-O)₂(μ-OAc)Mn(IV)(bipy)(H₂O)]²⁺ (3) is also postulated as an intermediate in the formation of 1.

Original language	English
Pages (from-to)	135-137
Number of pages	3
Journal	Inorganica Chimica Acta
Volume	212
Issue number	1-2
DOIs	https://doi.org/10.1016/S0020-1693(00)92318-1
Publication status	Published - 1993

ASJC Scopus subject areas

Biochemistry
Inorganic Chemistry
Physical and Theoretical Chemistry
Materials Chemistry

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title = "Formation of a high valent di-μ-oxo manganese dimer in aqueous solution",

abstract = "We find an unusual example in which different clusters can be isolated from the same reaction mixture depending on the choice of counter-ion. The complex [(bipy)2Mn(III)(μ-O)2Mn(IV)(bipy)2]3+ (1) (bipy=2,2′-dipyridyl) is isolated from Mn(II) and permanganate in acetate buffer with ClO4 -, but [(bipy)(H2O)Mn(III)(μ-O)(μ-OAc)2Mn(III)(bipy)(H2O)]2+ (2) with NO3 -. 1e-/2H+ or 1e-/1H+ proton-coupled electron transfer chemistry is found for 2 according to the type of buffer used. The new complex [(bipy)(H2O)Mn(III)(μ-O)2(μ-OAc)Mn(IV)(bipy)(H2O)]2+ (3) is also postulated as an intermediate in the formation of 1.",

author = "Rajesh Manchanda and Brudvig, {Gary W} and Crabtree, {Robert H.} and Sarneski, {Joseph E.} and Mary Didiuk",

year = "1993",

doi = "10.1016/S0020-1693(00)92318-1",

language = "English",

volume = "212",

pages = "135--137",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

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TY - JOUR

T1 - Formation of a high valent di-μ-oxo manganese dimer in aqueous solution

AU - Manchanda, Rajesh

AU - Brudvig, Gary W

AU - Crabtree, Robert H.

AU - Sarneski, Joseph E.

AU - Didiuk, Mary

PY - 1993

Y1 - 1993

N2 - We find an unusual example in which different clusters can be isolated from the same reaction mixture depending on the choice of counter-ion. The complex [(bipy)2Mn(III)(μ-O)2Mn(IV)(bipy)2]3+ (1) (bipy=2,2′-dipyridyl) is isolated from Mn(II) and permanganate in acetate buffer with ClO4 -, but [(bipy)(H2O)Mn(III)(μ-O)(μ-OAc)2Mn(III)(bipy)(H2O)]2+ (2) with NO3 -. 1e-/2H+ or 1e-/1H+ proton-coupled electron transfer chemistry is found for 2 according to the type of buffer used. The new complex [(bipy)(H2O)Mn(III)(μ-O)2(μ-OAc)Mn(IV)(bipy)(H2O)]2+ (3) is also postulated as an intermediate in the formation of 1.

AB - We find an unusual example in which different clusters can be isolated from the same reaction mixture depending on the choice of counter-ion. The complex [(bipy)2Mn(III)(μ-O)2Mn(IV)(bipy)2]3+ (1) (bipy=2,2′-dipyridyl) is isolated from Mn(II) and permanganate in acetate buffer with ClO4 -, but [(bipy)(H2O)Mn(III)(μ-O)(μ-OAc)2Mn(III)(bipy)(H2O)]2+ (2) with NO3 -. 1e-/2H+ or 1e-/1H+ proton-coupled electron transfer chemistry is found for 2 according to the type of buffer used. The new complex [(bipy)(H2O)Mn(III)(μ-O)2(μ-OAc)Mn(IV)(bipy)(H2O)]2+ (3) is also postulated as an intermediate in the formation of 1.

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U2 - 10.1016/S0020-1693(00)92318-1

DO - 10.1016/S0020-1693(00)92318-1

M3 - Article

AN - SCOPUS:0008084133

VL - 212

SP - 135

EP - 137

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

IS - 1-2

ER -