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Citation: Guo Ning, Wang Wei. Infrared Spectroscopic Study of Mechanism of Phase Transition in Dodecylammonium Tetrachlorozincate[J]. Chinese Journal of Applied Chemistry, ;1994, 11(4): 25-30. shu

Infrared Spectroscopic Study of Mechanism of Phase Transition in Dodecylammonium Tetrachlorozincate

Guo Ning ¹ ,
Wang Wei ²

1.
1. Department of Chemistry, Liaoning University, Shenyang 110036;
2.
2. Institute of Marine Chemistry, Qingdao Ocean University, Qingdao

Received Date: 25 November 1993
Available Online: 25 April 1994

The mechanism of the solid-solid phase transition in the perovskite-type layer of the title complex has been studied by infrared spectroscopy.The phase transition is related to the structural change of alkyl chains and it is mainly arises from the change of the packing structure and conformational order-disorder change in the alkyl chains.The phase transition is accompanied by an obvious decrease of the hydrogen bond strength.The "umelting" of the chains occurs owing to the TG defects near the terminal groups and GTG+GTG',as well as GG defects at higher temperature,It is found that the frequencies of an in-phase and an out-of-phase streching of C-C bonds are sensitive to the phase transition of the "chain melting".
- dodecylammonium tetrachlorozincate,
- phase transition,
- molecular conformation,
- infrared spectroscopy
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