Coordination nano-space as stage of hydrogen ortho–para conversion

Takashi Kosone; Akihiro Hori; Eiji Nishibori; Yoshiki Kubota; Akio Mishima; Masaaki Ohba; Hiroshi Tanaka; Kenichi Kato; Jungeun Kim; José Antonio Real; Susumu Kitagawa; Masaki Takata

doi:10.1098/rsos.150006

Coordination nano-space as stage of hydrogen ortho–para conversion

Takashi Kosone, Akihiro Hori, Eiji Nishibori, Yoshiki Kubota, Akio Mishima, Masaaki Ohba, Hiroshi Tanaka, Kenichi Kato, Jungeun Kim, José Antonio Real, Susumu Kitagawa, Masaki Takata

Inorganic and Analytical Chemistry

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

18 Citations (Scopus)

Abstract

The ability to design and control properties of nano-sized space in porous coordination polymers (PCPs) would provide us with an ideal stage for fascinating physical and chemical phenomena. We found an interconversion of nuclear-spin isomers for hydrogen molecule H₂ adsorbed in a Hofmann-type PCP, {Fe(pz)[Pd(CN)₄]} (pz=pyrazine), by the temperature dependence of Raman spectra. The ortho (o)–para (p) conversion process of H₂ is forbidden for an isolated molecule. The charge density study using synchrotron radiation X-ray diffraction reveals the electric field generated in coordination nano-space. The present results corroborate similar findings observed on different systems and confirm that o–p conversion can occur on non-magnetic solids and that electric field can induce the catalytic hydrogen o–p conversion.

Original language	English
Article number	150006
Journal	Royal Society Open Science
Volume	2
Issue number	7
DOIs	https://doi.org/10.1098/rsos.150006
Publication status	Published - Jul 2015

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10.1098/rsos.150006

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title = "Coordination nano-space as stage of hydrogen ortho–para conversion",

abstract = "The ability to design and control properties of nano-sized space in porous coordination polymers (PCPs) would provide us with an ideal stage for fascinating physical and chemical phenomena. We found an interconversion of nuclear-spin isomers for hydrogen molecule H2 adsorbed in a Hofmann-type PCP, {Fe(pz)[Pd(CN)4]} (pz=pyrazine), by the temperature dependence of Raman spectra. The ortho (o)–para (p) conversion process of H2 is forbidden for an isolated molecule. The charge density study using synchrotron radiation X-ray diffraction reveals the electric field generated in coordination nano-space. The present results corroborate similar findings observed on different systems and confirm that o–p conversion can occur on non-magnetic solids and that electric field can induce the catalytic hydrogen o–p conversion.",

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AU - Kosone, Takashi

AU - Hori, Akihiro

AU - Nishibori, Eiji

AU - Kubota, Yoshiki

AU - Mishima, Akio

AU - Ohba, Masaaki

AU - Tanaka, Hiroshi

AU - Kato, Kenichi

AU - Kim, Jungeun

AU - Real, José Antonio

AU - Kitagawa, Susumu

AU - Takata, Masaki

PY - 2015/7

Y1 - 2015/7

N2 - The ability to design and control properties of nano-sized space in porous coordination polymers (PCPs) would provide us with an ideal stage for fascinating physical and chemical phenomena. We found an interconversion of nuclear-spin isomers for hydrogen molecule H2 adsorbed in a Hofmann-type PCP, {Fe(pz)[Pd(CN)4]} (pz=pyrazine), by the temperature dependence of Raman spectra. The ortho (o)–para (p) conversion process of H2 is forbidden for an isolated molecule. The charge density study using synchrotron radiation X-ray diffraction reveals the electric field generated in coordination nano-space. The present results corroborate similar findings observed on different systems and confirm that o–p conversion can occur on non-magnetic solids and that electric field can induce the catalytic hydrogen o–p conversion.

AB - The ability to design and control properties of nano-sized space in porous coordination polymers (PCPs) would provide us with an ideal stage for fascinating physical and chemical phenomena. We found an interconversion of nuclear-spin isomers for hydrogen molecule H2 adsorbed in a Hofmann-type PCP, {Fe(pz)[Pd(CN)4]} (pz=pyrazine), by the temperature dependence of Raman spectra. The ortho (o)–para (p) conversion process of H2 is forbidden for an isolated molecule. The charge density study using synchrotron radiation X-ray diffraction reveals the electric field generated in coordination nano-space. The present results corroborate similar findings observed on different systems and confirm that o–p conversion can occur on non-magnetic solids and that electric field can induce the catalytic hydrogen o–p conversion.

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Coordination nano-space as stage of hydrogen ortho–para conversion

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