Experimental studies of complex hydride YMn 2H 6 on formation kinetics and x-ray absorption fine structure analyses

Motoaki Matsuo; Daiju Matsumura; Yasuo Nishihata; Guanqiao Li; Nao Hiyama; Satoshi Semboshi; Shin Ichi Orimo

doi:10.1063/1.3678032

Experimental studies of complex hydride YMn ₂H ₆ on formation kinetics and x-ray absorption fine structure analyses

Motoaki Matsuo, Daiju Matsumura, Yasuo Nishihata, Guanqiao Li, Nao Hiyama, Satoshi Semboshi, Shin Ichi Orimo

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

4 Citations (Scopus)

Abstract

Formation kinetics of a complex hydride YMn ₂H ₆ with [MnH ₆] ^5- complex anion from a metal hydride YMn ₂H _4.5 was investigated in the temperature range between 373 K and 448 K under 25 MPa H ₂. The time dependent of the YMn ₂H ₆ formation fraction suggested that the formation kinetics are controlled by random nucleation and growth with the activation energy of 113 kJ/mol H ₂. Local structure of YMn ₂H ₆ synthesized was also studied by x-ray absorption fine structure analysis. Mn-H covalent bonding nature in [MnH ₆] ^5- complex anion was successfully detected and the Mn-H distance was determined to be 1.67 ± 0.05 Å.

Original language	English
Article number	044101
Journal	Applied Physics Letters
Volume	100
Issue number	4
DOIs	https://doi.org/10.1063/1.3678032
Publication status	Published - 2012 Jan 23

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Experimental studies of complex hydride YMn 2H 6 on formation kinetics and x-ray absorption fine structure analyses",

abstract = "Formation kinetics of a complex hydride YMn 2H 6 with [MnH 6] 5- complex anion from a metal hydride YMn 2H 4.5 was investigated in the temperature range between 373 K and 448 K under 25 MPa H 2. The time dependent of the YMn 2H 6 formation fraction suggested that the formation kinetics are controlled by random nucleation and growth with the activation energy of 113 kJ/mol H 2. Local structure of YMn 2H 6 synthesized was also studied by x-ray absorption fine structure analysis. Mn-H covalent bonding nature in [MnH 6] 5- complex anion was successfully detected and the Mn-H distance was determined to be 1.67 ± 0.05 {\AA}.",

author = "Motoaki Matsuo and Daiju Matsumura and Yasuo Nishihata and Guanqiao Li and Nao Hiyama and Satoshi Semboshi and Orimo, {Shin Ichi}",

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volume = "100",

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T1 - Experimental studies of complex hydride YMn 2H 6 on formation kinetics and x-ray absorption fine structure analyses

AU - Matsuo, Motoaki

AU - Matsumura, Daiju

AU - Nishihata, Yasuo

AU - Li, Guanqiao

AU - Hiyama, Nao

AU - Semboshi, Satoshi

AU - Orimo, Shin Ichi

PY - 2012/1/23

Y1 - 2012/1/23

N2 - Formation kinetics of a complex hydride YMn 2H 6 with [MnH 6] 5- complex anion from a metal hydride YMn 2H 4.5 was investigated in the temperature range between 373 K and 448 K under 25 MPa H 2. The time dependent of the YMn 2H 6 formation fraction suggested that the formation kinetics are controlled by random nucleation and growth with the activation energy of 113 kJ/mol H 2. Local structure of YMn 2H 6 synthesized was also studied by x-ray absorption fine structure analysis. Mn-H covalent bonding nature in [MnH 6] 5- complex anion was successfully detected and the Mn-H distance was determined to be 1.67 ± 0.05 Å.

AB - Formation kinetics of a complex hydride YMn 2H 6 with [MnH 6] 5- complex anion from a metal hydride YMn 2H 4.5 was investigated in the temperature range between 373 K and 448 K under 25 MPa H 2. The time dependent of the YMn 2H 6 formation fraction suggested that the formation kinetics are controlled by random nucleation and growth with the activation energy of 113 kJ/mol H 2. Local structure of YMn 2H 6 synthesized was also studied by x-ray absorption fine structure analysis. Mn-H covalent bonding nature in [MnH 6] 5- complex anion was successfully detected and the Mn-H distance was determined to be 1.67 ± 0.05 Å.

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Experimental studies of complex hydride YMn ₂H ₆ on formation kinetics and x-ray absorption fine structure analyses

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