Phase transitions of intercalation inclusion compounds C2F0.92Br0.0·yCH3CN in the temperature range 20–260°CReport as inadecuate




Phase transitions of intercalation inclusion compounds C2F0.92Br0.0·yCH3CN in the temperature range 20–260°C - Download this document for free, or read online. Document in PDF available to download.

Journal of Structural Chemistry

, Volume 47, Issue 6, pp 1141–1154

Received: 12 April 2006

Abstract

X-ray phase analysis XRPA, differential thermal analysis DTA, and IR spectroscopy studies were performed to investigate stepwise transitions of the fluorographite intercalation inclusion compound host with acetonitrile guest. When heated in a guest atmosphere to 260±8°C, the compound of the first stage of saturation with a spacing of Ic = 9.47 Å undergoes sequential disproportionation into gaseous acetonitrile, a compound of the second stage Ic = 15.52 Å, a compound of the fourth stage of occupation Ic = 27.77 Å, and solid solutions based on the fluorographite matrix Ic = 6.05 Å that form -residual compounds.- In air the -residual compound- of graphite fluoride is formed at lower temperatures. Conditions of mutual transitions and formation of metastable states have been determined for which the domain model with coexisting microphases of different stages of occupation is discussed.

Keywordsintercalation compounds graphite fluoride X-ray phase analysis thermolysis phase transitions orientated layers Original Russian Text Copyright © 2006 by Yu. V. Shubin, D. V. Pinakov, G. N. Chekhova, N. I. Alferova, and V. A. Logvinenko

Translated from Zhurnal Strukturnoi Khimii, Vol. 47, No. 6, pp. 1150–1162, November–December, 2006.

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Author: Yu. V. Shubin - D. V. Pinakov - G. N. Chekhova - N. I. Alferova - V. A. Logvinenko

Source: https://link.springer.com/



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