Oxalate-bridged dirhenium(I) hexacarbonyl complexes: Synthesis, reactions, and crystal structures

Rui Zhang; Chee Leong Kee; Weng Kee Leong; Yaw Kai Yan

doi:10.1016/j.jorganchem.2004.06.017

Oxalate-bridged dirhenium(I) hexacarbonyl complexes: Synthesis, reactions, and crystal structures

Rui Zhang, Chee Leong Kee, Weng Kee Leong, Yaw Kai Yan^*

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

The complex [{Re(CO)₅}₂(μ,η₁ -C₂O₄)] 1 undergoes thermal decarbonylation to give [Re₂(CO)₆(C₂O₄)] _n, which reacts with triphenylphosphine and trans-1,2-bis(diphenylphosphino)ethylene (dppene) to give anti-[Re₂(PPh₃)₂(CO)₆ (μ,η²:η²-C₂O₄)] 2 and [Re₂(μ-dppene)₂(CO)₆μ, η²:η²-C₂O₄)],4 respectively. Complex 2 is oxidized on prolonged exposure to air (1 week) to form anti -[Re₂(OPPh₃)₂ (CO)₆(μ.η²:η² -C₂O₄)], 3. In the presence of excess dppene, the complex [Re₂(μ-dppene)₂(CO)₆ (μ.η¹:η¹-C₂O₄)], 5 is also formed alongside 4 . With the chelating diphosphine 1,3-bis(diphenylphosphino)propane (dppp), the complex [(η²-dppp)Re(CO)₃ (μ.η¹: η¹-C₂O₄)Re(CO)₃ (η²-dppp)] 6 is formed. The structures of 3 and 4 have been determined by X-ray crystallography. The dppene ligand in complex 4 adopts an unusual "syn" conformation wherein the two phosphorus lone pairs of electrons are eclipsed, thus forming an "A-frame" type of bridge.

Original language	English
Pages (from-to)	2837-2844
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	689
Issue number	17
DOIs	https://doi.org/10.1016/j.jorganchem.2004.06.017
Publication status	Published - Sept 1 2004
Externally published	Yes

ASJC Scopus Subject Areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

Keywords

Carbonyl
Carboxylate
Oxalate
Phosphine
Rhenium
trans-1,2-Bis(diphenylphosphino)ethylene

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10.1016/j.jorganchem.2004.06.017

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@article{d19298b4a9354d73b1efbc9f17cd7279,

title = "Oxalate-bridged dirhenium(I) hexacarbonyl complexes: Synthesis, reactions, and crystal structures",

abstract = "The complex [{Re(CO)5}2(μ,η1 -C2O4)] 1 undergoes thermal decarbonylation to give [Re2(CO)6(C2O4)] n, which reacts with triphenylphosphine and trans-1,2-bis(diphenylphosphino)ethylene (dppene) to give anti-[Re2(PPh3)2(CO)6 (μ,η2:η2-C2O4)] 2 and [Re2(μ-dppene)2(CO)6μ, η2:η2-C2O4)],4 respectively. Complex 2 is oxidized on prolonged exposure to air (1 week) to form anti -[Re2(OPPh3)2 (CO)6(μ.η2:η2 -C2O4)], 3. In the presence of excess dppene, the complex [Re2(μ-dppene)2(CO)6 (μ.η1:η1-C2O4)], 5 is also formed alongside 4 . With the chelating diphosphine 1,3-bis(diphenylphosphino)propane (dppp), the complex [(η2-dppp)Re(CO)3 (μ.η1: η1-C2O4)Re(CO)3 (η2-dppp)] 6 is formed. The structures of 3 and 4 have been determined by X-ray crystallography. The dppene ligand in complex 4 adopts an unusual {"}syn{"} conformation wherein the two phosphorus lone pairs of electrons are eclipsed, thus forming an {"}A-frame{"} type of bridge.",

keywords = "Carbonyl, Carboxylate, Oxalate, Phosphine, Rhenium, trans-1,2-Bis(diphenylphosphino)ethylene",

author = "Rui Zhang and Kee, {Chee Leong} and Leong, {Weng Kee} and Yan, {Yaw Kai}",

year = "2004",

month = sep,

day = "1",

doi = "10.1016/j.jorganchem.2004.06.017",

language = "English",

volume = "689",

pages = "2837--2844",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier",

number = "17",

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TY - JOUR

T1 - Oxalate-bridged dirhenium(I) hexacarbonyl complexes

T2 - Synthesis, reactions, and crystal structures

AU - Zhang, Rui

AU - Kee, Chee Leong

AU - Leong, Weng Kee

AU - Yan, Yaw Kai

PY - 2004/9/1

Y1 - 2004/9/1

N2 - The complex [{Re(CO)5}2(μ,η1 -C2O4)] 1 undergoes thermal decarbonylation to give [Re2(CO)6(C2O4)] n, which reacts with triphenylphosphine and trans-1,2-bis(diphenylphosphino)ethylene (dppene) to give anti-[Re2(PPh3)2(CO)6 (μ,η2:η2-C2O4)] 2 and [Re2(μ-dppene)2(CO)6μ, η2:η2-C2O4)],4 respectively. Complex 2 is oxidized on prolonged exposure to air (1 week) to form anti -[Re2(OPPh3)2 (CO)6(μ.η2:η2 -C2O4)], 3. In the presence of excess dppene, the complex [Re2(μ-dppene)2(CO)6 (μ.η1:η1-C2O4)], 5 is also formed alongside 4 . With the chelating diphosphine 1,3-bis(diphenylphosphino)propane (dppp), the complex [(η2-dppp)Re(CO)3 (μ.η1: η1-C2O4)Re(CO)3 (η2-dppp)] 6 is formed. The structures of 3 and 4 have been determined by X-ray crystallography. The dppene ligand in complex 4 adopts an unusual "syn" conformation wherein the two phosphorus lone pairs of electrons are eclipsed, thus forming an "A-frame" type of bridge.

AB - The complex [{Re(CO)5}2(μ,η1 -C2O4)] 1 undergoes thermal decarbonylation to give [Re2(CO)6(C2O4)] n, which reacts with triphenylphosphine and trans-1,2-bis(diphenylphosphino)ethylene (dppene) to give anti-[Re2(PPh3)2(CO)6 (μ,η2:η2-C2O4)] 2 and [Re2(μ-dppene)2(CO)6μ, η2:η2-C2O4)],4 respectively. Complex 2 is oxidized on prolonged exposure to air (1 week) to form anti -[Re2(OPPh3)2 (CO)6(μ.η2:η2 -C2O4)], 3. In the presence of excess dppene, the complex [Re2(μ-dppene)2(CO)6 (μ.η1:η1-C2O4)], 5 is also formed alongside 4 . With the chelating diphosphine 1,3-bis(diphenylphosphino)propane (dppp), the complex [(η2-dppp)Re(CO)3 (μ.η1: η1-C2O4)Re(CO)3 (η2-dppp)] 6 is formed. The structures of 3 and 4 have been determined by X-ray crystallography. The dppene ligand in complex 4 adopts an unusual "syn" conformation wherein the two phosphorus lone pairs of electrons are eclipsed, thus forming an "A-frame" type of bridge.

KW - Carbonyl

KW - Carboxylate

KW - Oxalate

KW - Phosphine

KW - Rhenium

KW - trans-1,2-Bis(diphenylphosphino)ethylene

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U2 - 10.1016/j.jorganchem.2004.06.017

DO - 10.1016/j.jorganchem.2004.06.017

M3 - Article

AN - SCOPUS:4043106426

SN - 0022-328X

VL - 689

SP - 2837

EP - 2844

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 17

ER -

Oxalate-bridged dirhenium(I) hexacarbonyl complexes: Synthesis, reactions, and crystal structures

Abstract

ASJC Scopus Subject Areas

Keywords

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