Phase transitions and nonplanar conformers in crystalline n-alkanes

Robert G. Snyder, Mark Maroncelli, Song Ping Qi, Herbert L. Strauss

Research output: Contribution to journalArticle

157 Citations (Scopus)

Abstract

Crystals of n-alkanes show a remarkable series of solid-solid phase transitions. In the odd n-alkanes C25, C27, and C 29 a previously unknown transition is found by both calorimetry and infrared spectroscopy. The ubiquitous presence of nonplanar conformations of the chains is shown by infrared spectroscopy. The nonplanar conformers constitute approximately half the molecules in the highest temperature solid phase of C29.

Original languageEnglish (US)
Pages (from-to)188-190
Number of pages3
JournalScience
Volume214
Issue number4517
DOIs
StatePublished - Jan 1 1981

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alkanes
solid phases
infrared spectroscopy
heat measurement
spectroscopy
crystals
molecules

All Science Journal Classification (ASJC) codes

  • General

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Snyder, Robert G. ; Maroncelli, Mark ; Qi, Song Ping ; Strauss, Herbert L. / Phase transitions and nonplanar conformers in crystalline n-alkanes. In: Science. 1981 ; Vol. 214, No. 4517. pp. 188-190.
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Phase transitions and nonplanar conformers in crystalline n-alkanes. / Snyder, Robert G.; Maroncelli, Mark; Qi, Song Ping; Strauss, Herbert L.

In: Science, Vol. 214, No. 4517, 01.01.1981, p. 188-190.

Research output: Contribution to journalArticle

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AU - Snyder, Robert G.

AU - Maroncelli, Mark

AU - Qi, Song Ping

AU - Strauss, Herbert L.

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N2 - Crystals of n-alkanes show a remarkable series of solid-solid phase transitions. In the odd n-alkanes C25, C27, and C 29 a previously unknown transition is found by both calorimetry and infrared spectroscopy. The ubiquitous presence of nonplanar conformations of the chains is shown by infrared spectroscopy. The nonplanar conformers constitute approximately half the molecules in the highest temperature solid phase of C29.

AB - Crystals of n-alkanes show a remarkable series of solid-solid phase transitions. In the odd n-alkanes C25, C27, and C 29 a previously unknown transition is found by both calorimetry and infrared spectroscopy. The ubiquitous presence of nonplanar conformations of the chains is shown by infrared spectroscopy. The nonplanar conformers constitute approximately half the molecules in the highest temperature solid phase of C29.

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