Spectroscopy and X-ray Crystal Structure of Luminescent Pt2(dppm)2(cn)4[dppm = Bis (diphenylphosphino) Methane]

Chi ming Che; Vivian Wing Wah Yam; Wing Tak Wong; Ting fong Lai

doi:10.1021/ic00314a007

Spectroscopy and X-ray Crystal Structure of Luminescent Pt₂(dppm)₂(cn)₄[dppm = Bis (diphenylphosphino) Methane]

Chi ming Che, Vivian Wing Wah Yam, Wing Tak Wong, Ting fong Lai

Research output: Journal article publication › Journal article › Academic research › peer-review

69 Citations (Scopus)

Abstract

The reaction of Pt(CN)2⋅xH2O with dppm [bis(diphenylphosphino)methane] in refluxing dimethylformamide (DMF) yielded Pt2(dppm)2(CN)4. The X-ray structure of this binuclear platinum(II) complex has been determined: Pt2(dppm)2(CN)4⋅2DMF, space group P21/n Z = 2, a = 11.561 (1) Å, b = 17.475 (1) Å, c = 13.981 (5) Å, β = 95.34 (2)°. The Pt2(dppm)2(CN)4molecule adopts the trans,trans geometry and consists of two platinum atoms bridged by two dppm groups, with two trans cyanide ions bonded to each platinum atom. The measured Pt.Pt distance is 3.301 (1) Å, indicative of a weak Pt.Pt bonding interaction. The UV-vis absorption spectrum of methanolic solutions of Pt2(dppm)2(CN)4exhibits an intense band at 324 nm 10500) (εmax10 500) and a weak band at ca. 390 nm, assigned to the1A1g→1Bluand1A1g→3Blutransitions, respectively. Excitation of Pt2-(dppm)2(CN)4at 324 nm in degassed methanol leads to an intense emission at 425 nm with a shoulder at ca. 530 nm. The room-temperature triplet lifetime has been found to be 0.23 μs in degassed methanol.

Original language	English
Pages (from-to)	2908-2910
Number of pages	3
Journal	Inorganic Chemistry
Volume	28
Issue number	15
DOIs	https://doi.org/10.1021/ic00314a007
Publication status	Published - 1 Jul 1989
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/ic00314a007

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@article{d227b8e59e08452482038a70995b29df,

title = "Spectroscopy and X-ray Crystal Structure of Luminescent Pt2(dppm)2(cn)4[dppm = Bis (diphenylphosphino) Methane]",

abstract = "The reaction of Pt(CN)2⋅xH2O with dppm [bis(diphenylphosphino)methane] in refluxing dimethylformamide (DMF) yielded Pt2(dppm)2(CN)4. The X-ray structure of this binuclear platinum(II) complex has been determined: Pt2(dppm)2(CN)4⋅2DMF, space group P21/n Z = 2, a = 11.561 (1) {\AA}, b = 17.475 (1) {\AA}, c = 13.981 (5) {\AA}, β = 95.34 (2)°. The Pt2(dppm)2(CN)4molecule adopts the trans,trans geometry and consists of two platinum atoms bridged by two dppm groups, with two trans cyanide ions bonded to each platinum atom. The measured Pt.Pt distance is 3.301 (1) {\AA}, indicative of a weak Pt.Pt bonding interaction. The UV-vis absorption spectrum of methanolic solutions of Pt2(dppm)2(CN)4exhibits an intense band at 324 nm 10500) (εmax10 500) and a weak band at ca. 390 nm, assigned to the1A1g→1Bluand1A1g→3Blutransitions, respectively. Excitation of Pt2-(dppm)2(CN)4at 324 nm in degassed methanol leads to an intense emission at 425 nm with a shoulder at ca. 530 nm. The room-temperature triplet lifetime has been found to be 0.23 μs in degassed methanol.",

author = "Che, {Chi ming} and Yam, {Vivian Wing Wah} and Wong, {Wing Tak} and Lai, {Ting fong}",

year = "1989",

month = jul,

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doi = "10.1021/ic00314a007",

language = "English",

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T1 - Spectroscopy and X-ray Crystal Structure of Luminescent Pt2(dppm)2(cn)4[dppm = Bis (diphenylphosphino) Methane]

AU - Che, Chi ming

AU - Yam, Vivian Wing Wah

AU - Wong, Wing Tak

AU - Lai, Ting fong

PY - 1989/7/1

Y1 - 1989/7/1

N2 - The reaction of Pt(CN)2⋅xH2O with dppm [bis(diphenylphosphino)methane] in refluxing dimethylformamide (DMF) yielded Pt2(dppm)2(CN)4. The X-ray structure of this binuclear platinum(II) complex has been determined: Pt2(dppm)2(CN)4⋅2DMF, space group P21/n Z = 2, a = 11.561 (1) Å, b = 17.475 (1) Å, c = 13.981 (5) Å, β = 95.34 (2)°. The Pt2(dppm)2(CN)4molecule adopts the trans,trans geometry and consists of two platinum atoms bridged by two dppm groups, with two trans cyanide ions bonded to each platinum atom. The measured Pt.Pt distance is 3.301 (1) Å, indicative of a weak Pt.Pt bonding interaction. The UV-vis absorption spectrum of methanolic solutions of Pt2(dppm)2(CN)4exhibits an intense band at 324 nm 10500) (εmax10 500) and a weak band at ca. 390 nm, assigned to the1A1g→1Bluand1A1g→3Blutransitions, respectively. Excitation of Pt2-(dppm)2(CN)4at 324 nm in degassed methanol leads to an intense emission at 425 nm with a shoulder at ca. 530 nm. The room-temperature triplet lifetime has been found to be 0.23 μs in degassed methanol.

AB - The reaction of Pt(CN)2⋅xH2O with dppm [bis(diphenylphosphino)methane] in refluxing dimethylformamide (DMF) yielded Pt2(dppm)2(CN)4. The X-ray structure of this binuclear platinum(II) complex has been determined: Pt2(dppm)2(CN)4⋅2DMF, space group P21/n Z = 2, a = 11.561 (1) Å, b = 17.475 (1) Å, c = 13.981 (5) Å, β = 95.34 (2)°. The Pt2(dppm)2(CN)4molecule adopts the trans,trans geometry and consists of two platinum atoms bridged by two dppm groups, with two trans cyanide ions bonded to each platinum atom. The measured Pt.Pt distance is 3.301 (1) Å, indicative of a weak Pt.Pt bonding interaction. The UV-vis absorption spectrum of methanolic solutions of Pt2(dppm)2(CN)4exhibits an intense band at 324 nm 10500) (εmax10 500) and a weak band at ca. 390 nm, assigned to the1A1g→1Bluand1A1g→3Blutransitions, respectively. Excitation of Pt2-(dppm)2(CN)4at 324 nm in degassed methanol leads to an intense emission at 425 nm with a shoulder at ca. 530 nm. The room-temperature triplet lifetime has been found to be 0.23 μs in degassed methanol.

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DO - 10.1021/ic00314a007

M3 - Journal article

SN - 0020-1669

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EP - 2910

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 15

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Spectroscopy and X-ray Crystal Structure of Luminescent Pt₂(dppm)₂(cn)₄[dppm = Bis (diphenylphosphino) Methane]

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