Synthetic, spectroscopic and electrochemical characterisation of mixed-metal acetylide complexes

Muhammad Younus; Nicholas J. Long; Paul R. Raithby; Jack Lewis

doi:10.1016/S0022-328X(98)00816-X

Synthetic, spectroscopic and electrochemical characterisation of mixed-metal acetylide complexes

Muhammad Younus, Nicholas J. Long, Paul R. Raithby, Jack Lewis

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

56 Citations (SciVal)

Abstract

Terminal metal acetylide complexes trans-[(dppm)₂(Cl)Os(-CC-R-CC-H)] (dppm=Ph₂PCH₂PPh₂, R=-p-C₆H₄- (1), -p-C₆H₄-C₆H₄-p- (2)) and trans-[(Et₃P)₂(Ph)Pt(CC-p-C₆H₄-CCH)] (3) have been synthesised by the application of established synthetic routes. Acetylide bridged mixed-metal complexes trans-[(dppm)₂(Cl)Os-CC-p-C₆H ₄-CC-Ru(Cl)(dppm)₂] (4), trans-[(Et₃P)₂(Ph)Pt-CC-p-C₆H ₄-CC-Ru(Cl)(dppm)₂] (5), trans-[(Et₃P)₂(Ph)Pt-CC-p-C₆H ₄-CC-Ru(Ph₃P)₂(η⁵-C ₅H₅)] (6) and trans-[(Et₃P)₂(Ph)Pt-CC-p-C₆H ₄-CC-Ru(Ph₃P)₂(η⁵-C ₅H₄-CH₃)] (7) have been formed by the reaction of 1, 2 and 3 with the appropriate metal chlorides. Complex 6 is less soluble in common organic solvents than the other complexes but this insolubility has been overcome by introducing a methylcyclopentadienyl group on the ruthenium centre to form complex 7. Complexes 1, 2, 4, 6 and 7 have shown reversible redox chemistry and in the di-metallic complexes, intramolecular electronic communication has been investigated by cyclic voltammetry. The shift in the lowest energy band in the UV-vis spectra of the mixed-metal complexes 4, 5, 6 and 7 is largely dependent on the various metal fragments.

Original language	English
Pages (from-to)	55-62
Number of pages	8
Journal	Journal of Organometallic Chemistry
Volume	570
Issue number	1
DOIs	https://doi.org/10.1016/S0022-328X(98)00816-X
Publication status	Published - 10 Nov 1998

Keywords

Acetylide
Electrochemistry
Osmium
Platinum
Ruthenium

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/S0022-328X(98)00816-X

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@article{dc22c8d6faa345128f82fa43d16c1022,

title = "Synthetic, spectroscopic and electrochemical characterisation of mixed-metal acetylide complexes",

abstract = "Terminal metal acetylide complexes trans-[(dppm)2(Cl)Os(-CC-R-CC-H)] (dppm=Ph2PCH2PPh2, R=-p-C6H4- (1), -p-C6H4-C6H4-p- (2)) and trans-[(Et3P)2(Ph)Pt(CC-p-C6H4-CCH)] (3) have been synthesised by the application of established synthetic routes. Acetylide bridged mixed-metal complexes trans-[(dppm)2(Cl)Os-CC-p-C6H 4-CC-Ru(Cl)(dppm)2] (4), trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Cl)(dppm)2] (5), trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Ph3P)2(η5-C 5H5)] (6) and trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Ph3P)2(η5-C 5H4-CH3)] (7) have been formed by the reaction of 1, 2 and 3 with the appropriate metal chlorides. Complex 6 is less soluble in common organic solvents than the other complexes but this insolubility has been overcome by introducing a methylcyclopentadienyl group on the ruthenium centre to form complex 7. Complexes 1, 2, 4, 6 and 7 have shown reversible redox chemistry and in the di-metallic complexes, intramolecular electronic communication has been investigated by cyclic voltammetry. The shift in the lowest energy band in the UV-vis spectra of the mixed-metal complexes 4, 5, 6 and 7 is largely dependent on the various metal fragments.",

keywords = "Acetylide, Electrochemistry, Osmium, Platinum, Ruthenium",

author = "Muhammad Younus and Long, {Nicholas J.} and Raithby, {Paul R.} and Jack Lewis",

year = "1998",

month = nov,

day = "10",

doi = "10.1016/S0022-328X(98)00816-X",

language = "English",

volume = "570",

pages = "55--62",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier B.V.",

number = "1",

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TY - JOUR

T1 - Synthetic, spectroscopic and electrochemical characterisation of mixed-metal acetylide complexes

AU - Younus, Muhammad

AU - Long, Nicholas J.

AU - Raithby, Paul R.

AU - Lewis, Jack

PY - 1998/11/10

Y1 - 1998/11/10

N2 - Terminal metal acetylide complexes trans-[(dppm)2(Cl)Os(-CC-R-CC-H)] (dppm=Ph2PCH2PPh2, R=-p-C6H4- (1), -p-C6H4-C6H4-p- (2)) and trans-[(Et3P)2(Ph)Pt(CC-p-C6H4-CCH)] (3) have been synthesised by the application of established synthetic routes. Acetylide bridged mixed-metal complexes trans-[(dppm)2(Cl)Os-CC-p-C6H 4-CC-Ru(Cl)(dppm)2] (4), trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Cl)(dppm)2] (5), trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Ph3P)2(η5-C 5H5)] (6) and trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Ph3P)2(η5-C 5H4-CH3)] (7) have been formed by the reaction of 1, 2 and 3 with the appropriate metal chlorides. Complex 6 is less soluble in common organic solvents than the other complexes but this insolubility has been overcome by introducing a methylcyclopentadienyl group on the ruthenium centre to form complex 7. Complexes 1, 2, 4, 6 and 7 have shown reversible redox chemistry and in the di-metallic complexes, intramolecular electronic communication has been investigated by cyclic voltammetry. The shift in the lowest energy band in the UV-vis spectra of the mixed-metal complexes 4, 5, 6 and 7 is largely dependent on the various metal fragments.

AB - Terminal metal acetylide complexes trans-[(dppm)2(Cl)Os(-CC-R-CC-H)] (dppm=Ph2PCH2PPh2, R=-p-C6H4- (1), -p-C6H4-C6H4-p- (2)) and trans-[(Et3P)2(Ph)Pt(CC-p-C6H4-CCH)] (3) have been synthesised by the application of established synthetic routes. Acetylide bridged mixed-metal complexes trans-[(dppm)2(Cl)Os-CC-p-C6H 4-CC-Ru(Cl)(dppm)2] (4), trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Cl)(dppm)2] (5), trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Ph3P)2(η5-C 5H5)] (6) and trans-[(Et3P)2(Ph)Pt-CC-p-C6H 4-CC-Ru(Ph3P)2(η5-C 5H4-CH3)] (7) have been formed by the reaction of 1, 2 and 3 with the appropriate metal chlorides. Complex 6 is less soluble in common organic solvents than the other complexes but this insolubility has been overcome by introducing a methylcyclopentadienyl group on the ruthenium centre to form complex 7. Complexes 1, 2, 4, 6 and 7 have shown reversible redox chemistry and in the di-metallic complexes, intramolecular electronic communication has been investigated by cyclic voltammetry. The shift in the lowest energy band in the UV-vis spectra of the mixed-metal complexes 4, 5, 6 and 7 is largely dependent on the various metal fragments.

KW - Acetylide

KW - Electrochemistry

KW - Osmium

KW - Platinum

KW - Ruthenium

UR - http://www.scopus.com/inward/record.url?scp=0003156014&partnerID=8YFLogxK

U2 - 10.1016/S0022-328X(98)00816-X

DO - 10.1016/S0022-328X(98)00816-X

M3 - Article

AN - SCOPUS:0003156014

SN - 0022-328X

VL - 570

SP - 55

EP - 62

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 1

ER -

Synthetic, spectroscopic and electrochemical characterisation of mixed-metal acetylide complexes

Abstract

Keywords

ASJC Scopus subject areas

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