Dihydride versus dihydrogen complex; the photochemical reaction of [(η5;-C5H5)M(CO)4] (M = V, Nb and Ta) with hydrogen in solution at both cryogenic and room temperatures

Mark T. Haward; Michael W. George; Paul Hamley; Martyn Poliakoff

doi:10.1039/C39910001101

Dihydride versus dihydrogen complex; the photochemical reaction of [(η⁵;-C₅H₅)M(CO)₄] (M = V, Nb and Ta) with hydrogen in solution at both cryogenic and room temperatures

Mark T. Haward
, Michael W. George
, Paul Hamley
, Martyn Poliakoff^*

^*Corresponding author for this work

Research output: Journal Publication › Article › peer-review

34 Citations (Scopus)

Abstract

UV photolysis of [cpM(CO)₄] (cp = η⁵-C ₅H₅; M = V, Nb and Ta) and H₂has been studied by IR spectroscopy both in n-heptane solution at 25°C and in liquid Xenon solution at -110 to -45°C; for V, the reaction leads to formation of the non-classical complex [cpV(CO)₃(η²-H₂)] while, for Ta, the dihydride [cpTa(CO)₃H₂] is formed; for Nb, there is a temperature dependent equilibrium between the classical [cpNb(CO)₃H₂] and non-classical [cpNb(CO) ₃(η²-H₂)] compounds, which presents an unusual opportunity to study the formation of these species using nanosecond Time-resolved IR spectroscopy (TRIR).

Original language	English
Pages (from-to)	1101-1103
Number of pages	3
Journal	Journal of the Chemical Society D: Chemical Communications
Issue number	16
DOIs	https://doi.org/10.1039/C39910001101
Publication status	Published - 1991
Externally published	Yes

ASJC Scopus subject areas

Molecular Medicine

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@article{9a8e7db7cdb44bf3b776c41da49ef3ea,

title = "Dihydride versus dihydrogen complex; the photochemical reaction of [(η5;-C5H5)M(CO)4] (M = V, Nb and Ta) with hydrogen in solution at both cryogenic and room temperatures",

abstract = "UV photolysis of [cpM(CO)4] (cp = η5-C 5H5; M = V, Nb and Ta) and H2has been studied by IR spectroscopy both in n-heptane solution at 25°C and in liquid Xenon solution at -110 to -45°C; for V, the reaction leads to formation of the non-classical complex [cpV(CO)3(η2-H2)] while, for Ta, the dihydride [cpTa(CO)3H2] is formed; for Nb, there is a temperature dependent equilibrium between the classical [cpNb(CO)3H2] and non-classical [cpNb(CO) 3(η2-H2)] compounds, which presents an unusual opportunity to study the formation of these species using nanosecond Time-resolved IR spectroscopy (TRIR).",

author = "Haward, \{Mark T.\} and George, \{Michael W.\} and Paul Hamley and Martyn Poliakoff",

year = "1991",

doi = "10.1039/C39910001101",

language = "English",

pages = "1101--1103",

journal = "Journal of the Chemical Society D: Chemical Communications",

issn = "0022-4936",

publisher = "Chemical Society",

number = "16",

}

Dihydride versus dihydrogen complex; the photochemical reaction of [(η⁵;-C₅H₅)M(CO)₄] (M = V, Nb and Ta) with hydrogen in solution at both cryogenic and room temperatures. / Haward, Mark T.; George, Michael W.; Hamley, Paul et al.
In: Journal of the Chemical Society D: Chemical Communications, No. 16, 1991, p. 1101-1103.

Research output: Journal Publication › Article › peer-review

TY - JOUR

T1 - Dihydride versus dihydrogen complex; the photochemical reaction of [(η5;-C5H5)M(CO)4] (M = V, Nb and Ta) with hydrogen in solution at both cryogenic and room temperatures

AU - Haward, Mark T.

AU - George, Michael W.

AU - Hamley, Paul

AU - Poliakoff, Martyn

PY - 1991

Y1 - 1991

N2 - UV photolysis of [cpM(CO)4] (cp = η5-C 5H5; M = V, Nb and Ta) and H2has been studied by IR spectroscopy both in n-heptane solution at 25°C and in liquid Xenon solution at -110 to -45°C; for V, the reaction leads to formation of the non-classical complex [cpV(CO)3(η2-H2)] while, for Ta, the dihydride [cpTa(CO)3H2] is formed; for Nb, there is a temperature dependent equilibrium between the classical [cpNb(CO)3H2] and non-classical [cpNb(CO) 3(η2-H2)] compounds, which presents an unusual opportunity to study the formation of these species using nanosecond Time-resolved IR spectroscopy (TRIR).

AB - UV photolysis of [cpM(CO)4] (cp = η5-C 5H5; M = V, Nb and Ta) and H2has been studied by IR spectroscopy both in n-heptane solution at 25°C and in liquid Xenon solution at -110 to -45°C; for V, the reaction leads to formation of the non-classical complex [cpV(CO)3(η2-H2)] while, for Ta, the dihydride [cpTa(CO)3H2] is formed; for Nb, there is a temperature dependent equilibrium between the classical [cpNb(CO)3H2] and non-classical [cpNb(CO) 3(η2-H2)] compounds, which presents an unusual opportunity to study the formation of these species using nanosecond Time-resolved IR spectroscopy (TRIR).

UR - https://www.scopus.com/pages/publications/37049079775

U2 - 10.1039/C39910001101

DO - 10.1039/C39910001101

M3 - Article

AN - SCOPUS:37049079775

SN - 0022-4936

SP - 1101

EP - 1103

JO - Journal of the Chemical Society D: Chemical Communications

JF - Journal of the Chemical Society D: Chemical Communications

IS - 16

ER -

Dihydride versus dihydrogen complex; the photochemical reaction of [(η⁵;-C₅H₅)M(CO)₄] (M = V, Nb and Ta) with hydrogen in solution at both cryogenic and room temperatures

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