Bond strengths of new carbon-nitride-related material C2N 2(CH2)

M. Sougawa, T. Sumiya, K. Takarabe, Y. Mori, T. Okada, H. Gotou, T. Yagi, D. Yamazaki, N. Tomioka, T. Katsura, H. Kariyazaki, K. Sueoka, S. Kunitsugu

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Abstract

A new carbon-nitride-related material C2N2(CH 2) nanopletelet was synthesized by subjecting a precursor C 3N4HxOy+Au in a laser-heating diamond anvil cell (LHDAC) to the pressure of 40 GPa and the temperature of 1200-2000 K. The synthesized C2N2(CH2) was accordingly found to be an orthorhombic unit cell of the space group Cmc2 1 with lattice constants a = 7.625Å, b = 4.490Å, and c = 4.047Å. The bulk modulus B0 was determined to be B0 = 258 ± 3.4 GPa, only the 60 % that of the diamond. C2N 2(CH2) consists of the tetrahedrally coordinated C with three C-N single bond and the one C-C single bond, and the bridging carbon with the C-CH2-C bond. The C-N single bond length of the tetrahedron ranges from 1.444 to 1.503 Å. This bond length is close to the C-N single bond of 1.447 to 1.458 Å in the superhard β-C3N 4. The compressibility of the C-N and C-C single bond of C 2N2(CH2) ranges from 0.976 to 0.982 with the pressure of 30 GPa. These values are very close to the compressibility of the C-N and C-C single bond of 0.978 to 0.982 in β-C3N4, cubic-C3N4, and diamond.

Original languageEnglish
Article number012028
JournalJournal of Physics: Conference Series
Volume377
Issue number1
DOIs
Publication statusPublished - 2012
Event23rd International Conference on High Pressure Science and Technology, AIRAPT-23 - Mumbai, India
Duration: Sep 25 2011Sep 30 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Sougawa, M., Sumiya, T., Takarabe, K., Mori, Y., Okada, T., Gotou, H., Yagi, T., Yamazaki, D., Tomioka, N., Katsura, T., Kariyazaki, H., Sueoka, K., & Kunitsugu, S. (2012). Bond strengths of new carbon-nitride-related material C2N 2(CH2). Journal of Physics: Conference Series, 377(1), [012028]. https://doi.org/10.1088/1742-6596/377/1/012028