Effect of ring substituents on formation rates for vanadium-arene clusters

Masaaki Hirano; Ken Judai; Atsushi Nakajima; Koji Kaya

doi:10.1021/jp9705378

Effect of ring substituents on formation rates for vanadium-arene clusters

Masaaki Hirano, Ken Judai, Atsushi Nakajima, Koji Kaya

Department of Chemistry

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24 Citations (Scopus)

Abstract

Vanadium-arene complexes, V_n(arene)_m (arene = benzene (C₆H₆), toluene (C₆H₅CH₃), and fluorobenzene (C₆H₅F)), were synthesized by the reaction of laser-vaporized vanadium atoms with arene vapor. Both the analysis of the mass spectra and the measurements of their ionization energies indicate that both V_n(C₆H₅-CH₃)_m and V_n(C₆H₅F)_m, clusters take a multiple-decker sandwich structure similar to the structure of V_n-(C₆H₆)_m clusters. The relative reactivity between benzene and toluene toward vanadium was also determined; toluene is 4 times as reactive as benzene for V₁(C₆H₅CH₃)₁/V ₁(C₆H₆)₁ production and 2 times for V₁(C₆H₅-CH₃)₂/V ₁(C₆H₆)₂ production because of reactivity enhancement of the electron-donating ring substituent. In the case of the V_n(C₆H₅F)_m cluster, it is found that the electron-withdrawing ring substituent of fluorobenzene results in much less reactivity than is observed for benzene and toluene.

Original language	English
Pages (from-to)	4893-4899
Number of pages	7
Journal	Journal of Physical Chemistry A
Volume	101
Issue number	27
DOIs	https://doi.org/10.1021/jp9705378
Publication status	Published - 1997 Jul 3

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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title = "Effect of ring substituents on formation rates for vanadium-arene clusters",

abstract = "Vanadium-arene complexes, Vn(arene)m (arene = benzene (C6H6), toluene (C6H5CH3), and fluorobenzene (C6H5F)), were synthesized by the reaction of laser-vaporized vanadium atoms with arene vapor. Both the analysis of the mass spectra and the measurements of their ionization energies indicate that both Vn(C6H5-CH3)m and Vn(C6H5F)m, clusters take a multiple-decker sandwich structure similar to the structure of Vn-(C6H6)m clusters. The relative reactivity between benzene and toluene toward vanadium was also determined; toluene is 4 times as reactive as benzene for V1(C6H5CH3)1/V 1(C6H6)1 production and 2 times for V1(C6H5-CH3)2/V 1(C6H6)2 production because of reactivity enhancement of the electron-donating ring substituent. In the case of the Vn(C6H5F)m cluster, it is found that the electron-withdrawing ring substituent of fluorobenzene results in much less reactivity than is observed for benzene and toluene.",

author = "Masaaki Hirano and Ken Judai and Atsushi Nakajima and Koji Kaya",

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doi = "10.1021/jp9705378",

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T1 - Effect of ring substituents on formation rates for vanadium-arene clusters

AU - Hirano, Masaaki

AU - Judai, Ken

AU - Nakajima, Atsushi

AU - Kaya, Koji

PY - 1997/7/3

Y1 - 1997/7/3

N2 - Vanadium-arene complexes, Vn(arene)m (arene = benzene (C6H6), toluene (C6H5CH3), and fluorobenzene (C6H5F)), were synthesized by the reaction of laser-vaporized vanadium atoms with arene vapor. Both the analysis of the mass spectra and the measurements of their ionization energies indicate that both Vn(C6H5-CH3)m and Vn(C6H5F)m, clusters take a multiple-decker sandwich structure similar to the structure of Vn-(C6H6)m clusters. The relative reactivity between benzene and toluene toward vanadium was also determined; toluene is 4 times as reactive as benzene for V1(C6H5CH3)1/V 1(C6H6)1 production and 2 times for V1(C6H5-CH3)2/V 1(C6H6)2 production because of reactivity enhancement of the electron-donating ring substituent. In the case of the Vn(C6H5F)m cluster, it is found that the electron-withdrawing ring substituent of fluorobenzene results in much less reactivity than is observed for benzene and toluene.

AB - Vanadium-arene complexes, Vn(arene)m (arene = benzene (C6H6), toluene (C6H5CH3), and fluorobenzene (C6H5F)), were synthesized by the reaction of laser-vaporized vanadium atoms with arene vapor. Both the analysis of the mass spectra and the measurements of their ionization energies indicate that both Vn(C6H5-CH3)m and Vn(C6H5F)m, clusters take a multiple-decker sandwich structure similar to the structure of Vn-(C6H6)m clusters. The relative reactivity between benzene and toluene toward vanadium was also determined; toluene is 4 times as reactive as benzene for V1(C6H5CH3)1/V 1(C6H6)1 production and 2 times for V1(C6H5-CH3)2/V 1(C6H6)2 production because of reactivity enhancement of the electron-donating ring substituent. In the case of the Vn(C6H5F)m cluster, it is found that the electron-withdrawing ring substituent of fluorobenzene results in much less reactivity than is observed for benzene and toluene.

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Effect of ring substituents on formation rates for vanadium-arene clusters

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