Mössbauer spectroscopy of bucky ferrocenes: Lattice dynamics and motional anisotropy of the metal atom

Rolfe H. Herber; Israel Nowik; Yutaka Matsuo; Motoki Toganoh; Yoichiro Kuninobu; Eiichi Nakamura

doi:10.1021/ic050251e

Mössbauer spectroscopy of bucky ferrocenes: Lattice dynamics and motional anisotropy of the metal atom

Rolfe H. Herber, Israel Nowik, Yutaka Matsuo, Motoki Toganoh, Yoichiro Kuninobu, Eiichi Nakamura

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

42 Citations (Scopus)

Abstract

Temperature-dependent ⁵⁷Fe Mössbauer effect spectroscopy has been used to elucidate the metal atom dynamics in three neutral and two cationic bucky ferrocenes. For the three diamagnetic complexes Fe(C ₆₀H₅)Cp (1), Fe(C₆₀Me₅)Cp (2), and Fe(C₆₀Ph₅)Cp (3), the metal atom motion is anisotropic and the temperature dependence of the mean-square amplitude of vibration of the metal atom at a number of temperatures is reported. The Mössbauer lattice temperatures have been determined and compared to the parent ferrocene (6). The synthesis and X-ray crystal structure of 3 have been determined at 153(2) K, and the ¹H and ¹³C NMR spectra have been recorded. The cationic complexes derived from 2 and 3 show spin-lattice relaxation. The relaxation rate appears insensitive to the nearest-neighbor environment of the metal atom in this pair.

Original language	English
Pages (from-to)	5629-5635
Number of pages	7
Journal	Inorganic chemistry
Volume	44
Issue number	16
DOIs	https://doi.org/10.1021/ic050251e
Publication status	Published - Aug 8 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/ic050251e

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title = "M{\"o}ssbauer spectroscopy of bucky ferrocenes: Lattice dynamics and motional anisotropy of the metal atom",

abstract = "Temperature-dependent 57Fe M{\"o}ssbauer effect spectroscopy has been used to elucidate the metal atom dynamics in three neutral and two cationic bucky ferrocenes. For the three diamagnetic complexes Fe(C 60H5)Cp (1), Fe(C60Me5)Cp (2), and Fe(C60Ph5)Cp (3), the metal atom motion is anisotropic and the temperature dependence of the mean-square amplitude of vibration of the metal atom at a number of temperatures is reported. The M{\"o}ssbauer lattice temperatures have been determined and compared to the parent ferrocene (6). The synthesis and X-ray crystal structure of 3 have been determined at 153(2) K, and the 1H and 13C NMR spectra have been recorded. The cationic complexes derived from 2 and 3 show spin-lattice relaxation. The relaxation rate appears insensitive to the nearest-neighbor environment of the metal atom in this pair.",

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T2 - Lattice dynamics and motional anisotropy of the metal atom

AU - Herber, Rolfe H.

AU - Nowik, Israel

AU - Matsuo, Yutaka

AU - Toganoh, Motoki

AU - Kuninobu, Yoichiro

AU - Nakamura, Eiichi

PY - 2005/8/8

Y1 - 2005/8/8

N2 - Temperature-dependent 57Fe Mössbauer effect spectroscopy has been used to elucidate the metal atom dynamics in three neutral and two cationic bucky ferrocenes. For the three diamagnetic complexes Fe(C 60H5)Cp (1), Fe(C60Me5)Cp (2), and Fe(C60Ph5)Cp (3), the metal atom motion is anisotropic and the temperature dependence of the mean-square amplitude of vibration of the metal atom at a number of temperatures is reported. The Mössbauer lattice temperatures have been determined and compared to the parent ferrocene (6). The synthesis and X-ray crystal structure of 3 have been determined at 153(2) K, and the 1H and 13C NMR spectra have been recorded. The cationic complexes derived from 2 and 3 show spin-lattice relaxation. The relaxation rate appears insensitive to the nearest-neighbor environment of the metal atom in this pair.

AB - Temperature-dependent 57Fe Mössbauer effect spectroscopy has been used to elucidate the metal atom dynamics in three neutral and two cationic bucky ferrocenes. For the three diamagnetic complexes Fe(C 60H5)Cp (1), Fe(C60Me5)Cp (2), and Fe(C60Ph5)Cp (3), the metal atom motion is anisotropic and the temperature dependence of the mean-square amplitude of vibration of the metal atom at a number of temperatures is reported. The Mössbauer lattice temperatures have been determined and compared to the parent ferrocene (6). The synthesis and X-ray crystal structure of 3 have been determined at 153(2) K, and the 1H and 13C NMR spectra have been recorded. The cationic complexes derived from 2 and 3 show spin-lattice relaxation. The relaxation rate appears insensitive to the nearest-neighbor environment of the metal atom in this pair.

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Mössbauer spectroscopy of bucky ferrocenes: Lattice dynamics and motional anisotropy of the metal atom

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