The first structurally confirmed paddlewheel compound with an M27+ core: [Os2(hpp)4Cl2](PF6)

F. Albert Cotton; Naresh S. Dalal; Penglin Huang; Carlos A. Murillo; Ashley C. Stowe; Xiaoping Wang

doi:10.1021/ic026250t

The first structurally confirmed paddlewheel compound with an M₂⁷⁺ core: [Os₂(hpp)₄Cl₂](PF₆)

F. Albert Cotton, Naresh S. Dalal, Penglin Huang, Carlos A. Murillo, Ashley C. Stowe, Xiaoping Wang

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

36 Scopus citations

Abstract

Oxidation of Os₂(hpp)₄Cl₂, 1 (hpp = the anion of 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine), with (FeCp₂)PF₆ produces air-stable [Os₂(hpp)₄Cl₂]PF₆, 2. This is the first structurally confirmed metal - metal bonded paddlewheel compound having an M₂⁷⁺ core. The Os - Os distances for two crystalline forms, 2·2acetone and 2·hexane, are 2.3309(4) and 2.3290(6) Å, respectively. EPR, ¹H NMR, and magnetization data indicate that 2 has an unpaired electron and an exceptionally low g value of 0.791 ± 0.037. An electrochemical study shows that there is a quasireversible wave corresponding to a more highly oxidized species with an unprecedented Os₂⁸⁺ core.

Original language	English
Pages (from-to)	670-672
Number of pages	3
Journal	Inorganic Chemistry
Volume	42
Issue number	3
DOIs	https://doi.org/10.1021/ic026250t
State	Published - Feb 10 2003
Externally published	Yes

Access to Document

10.1021/ic026250t

Cite this

@article{a88838c73b404517ba99d92f8dbec25e,

title = "The first structurally confirmed paddlewheel compound with an M27+ core: [Os2(hpp)4Cl2](PF6)",

abstract = "Oxidation of Os2(hpp)4Cl2, 1 (hpp = the anion of 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine), with (FeCp2)PF6 produces air-stable [Os2(hpp)4Cl2]PF6, 2. This is the first structurally confirmed metal - metal bonded paddlewheel compound having an M27+ core. The Os - Os distances for two crystalline forms, 2·2acetone and 2·hexane, are 2.3309(4) and 2.3290(6) {\AA}, respectively. EPR, 1H NMR, and magnetization data indicate that 2 has an unpaired electron and an exceptionally low g value of 0.791 ± 0.037. An electrochemical study shows that there is a quasireversible wave corresponding to a more highly oxidized species with an unprecedented Os28+ core.",

author = "Cotton, {F. Albert} and Dalal, {Naresh S.} and Penglin Huang and Murillo, {Carlos A.} and Stowe, {Ashley C.} and Xiaoping Wang",

year = "2003",

month = feb,

day = "10",

doi = "10.1021/ic026250t",

language = "English",

volume = "42",

pages = "670--672",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "3",

}

TY - JOUR

T1 - The first structurally confirmed paddlewheel compound with an M27+ core

T2 - [Os2(hpp)4Cl2](PF6)

AU - Cotton, F. Albert

AU - Dalal, Naresh S.

AU - Huang, Penglin

AU - Murillo, Carlos A.

AU - Stowe, Ashley C.

AU - Wang, Xiaoping

PY - 2003/2/10

Y1 - 2003/2/10

N2 - Oxidation of Os2(hpp)4Cl2, 1 (hpp = the anion of 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine), with (FeCp2)PF6 produces air-stable [Os2(hpp)4Cl2]PF6, 2. This is the first structurally confirmed metal - metal bonded paddlewheel compound having an M27+ core. The Os - Os distances for two crystalline forms, 2·2acetone and 2·hexane, are 2.3309(4) and 2.3290(6) Å, respectively. EPR, 1H NMR, and magnetization data indicate that 2 has an unpaired electron and an exceptionally low g value of 0.791 ± 0.037. An electrochemical study shows that there is a quasireversible wave corresponding to a more highly oxidized species with an unprecedented Os28+ core.

AB - Oxidation of Os2(hpp)4Cl2, 1 (hpp = the anion of 1,3,4,6,7,8-hexahydro-2H-pyrimido[1,2-a]pyrimidine), with (FeCp2)PF6 produces air-stable [Os2(hpp)4Cl2]PF6, 2. This is the first structurally confirmed metal - metal bonded paddlewheel compound having an M27+ core. The Os - Os distances for two crystalline forms, 2·2acetone and 2·hexane, are 2.3309(4) and 2.3290(6) Å, respectively. EPR, 1H NMR, and magnetization data indicate that 2 has an unpaired electron and an exceptionally low g value of 0.791 ± 0.037. An electrochemical study shows that there is a quasireversible wave corresponding to a more highly oxidized species with an unprecedented Os28+ core.

UR - http://www.scopus.com/inward/record.url?scp=0037429143&partnerID=8YFLogxK

U2 - 10.1021/ic026250t

DO - 10.1021/ic026250t

M3 - Article

C2 - 12562178

AN - SCOPUS:0037429143

SN - 0020-1669

VL - 42

SP - 670

EP - 672

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 3

ER -

The first structurally confirmed paddlewheel compound with an M₂⁷⁺ core: [Os₂(hpp)₄Cl₂](PF₆)

Abstract

Access to Document

Other files and links

Fingerprint

Cite this