Phase transition and ring-puckering motion in a metal-organic perovskite [(CH2)3NH2][Zn(HCOO)3]

Tetsuo Asaji; Yoshiharu Ito; Janez Seliger; Veselko Žagar; Anton Gradišek; Tomaž Apih

doi:10.1021/jp310132a

Phase transition and ring-puckering motion in a metal-organic perovskite [(CH₂)₃NH₂][Zn(HCOO)₃]

Tetsuo Asaji, Yoshiharu Ito, Janez Seliger, Veselko Žagar, Anton Gradišek, Tomaž Apih

College of Industrial Technology

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

22 Citations (Scopus)

Abstract

Phase transitions in a metal-organic perovskite with an azetidinium cation, which exhibits giant polarizability, were investigated using differential scanning calorimetry (DSC) and ¹H nuclear magnetic resonance (NMR) measurements. The DSC results indicated successive phase transitions at 254 and 299 K. The temperature dependence of the spin-lattice relaxation time T ₁ determined by NMR indicated that the activation energy for cation ring-puckering motion was 25 kJ mol^-1 in phase I (T > 299 K). The potential energy at the transition state of puckering is expected to decrease when the potential for the motion becomes asymmetric with decreasing temperature in phases II and III. A possible mechanism for the onset of an extraordinarily large dielectric anomaly is discussed.

Original language	English
Pages (from-to)	12422-12428
Number of pages	7
Journal	Journal of Physical Chemistry A
Volume	116
Issue number	51
DOIs	https://doi.org/10.1021/jp310132a
Publication status	Published - 27 Dec 2012

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title = "Phase transition and ring-puckering motion in a metal-organic perovskite [(CH2)3NH2][Zn(HCOO)3]",

abstract = "Phase transitions in a metal-organic perovskite with an azetidinium cation, which exhibits giant polarizability, were investigated using differential scanning calorimetry (DSC) and 1H nuclear magnetic resonance (NMR) measurements. The DSC results indicated successive phase transitions at 254 and 299 K. The temperature dependence of the spin-lattice relaxation time T 1 determined by NMR indicated that the activation energy for cation ring-puckering motion was 25 kJ mol-1 in phase I (T > 299 K). The potential energy at the transition state of puckering is expected to decrease when the potential for the motion becomes asymmetric with decreasing temperature in phases II and III. A possible mechanism for the onset of an extraordinarily large dielectric anomaly is discussed.",

author = "Tetsuo Asaji and Yoshiharu Ito and Janez Seliger and Veselko {\v Z}agar and Anton Gradi{\v s}ek and Toma{\v z} Apih",

year = "2012",

month = dec,

day = "27",

doi = "10.1021/jp310132a",

language = "English",

volume = "116",

pages = "12422--12428",

journal = "Journal of Physical Chemistry A",

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publisher = "American Chemical Society",

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TY - JOUR

T1 - Phase transition and ring-puckering motion in a metal-organic perovskite [(CH2)3NH2][Zn(HCOO)3]

AU - Asaji, Tetsuo

AU - Ito, Yoshiharu

AU - Seliger, Janez

AU - Žagar, Veselko

AU - Gradišek, Anton

AU - Apih, Tomaž

PY - 2012/12/27

Y1 - 2012/12/27

N2 - Phase transitions in a metal-organic perovskite with an azetidinium cation, which exhibits giant polarizability, were investigated using differential scanning calorimetry (DSC) and 1H nuclear magnetic resonance (NMR) measurements. The DSC results indicated successive phase transitions at 254 and 299 K. The temperature dependence of the spin-lattice relaxation time T 1 determined by NMR indicated that the activation energy for cation ring-puckering motion was 25 kJ mol-1 in phase I (T > 299 K). The potential energy at the transition state of puckering is expected to decrease when the potential for the motion becomes asymmetric with decreasing temperature in phases II and III. A possible mechanism for the onset of an extraordinarily large dielectric anomaly is discussed.

AB - Phase transitions in a metal-organic perovskite with an azetidinium cation, which exhibits giant polarizability, were investigated using differential scanning calorimetry (DSC) and 1H nuclear magnetic resonance (NMR) measurements. The DSC results indicated successive phase transitions at 254 and 299 K. The temperature dependence of the spin-lattice relaxation time T 1 determined by NMR indicated that the activation energy for cation ring-puckering motion was 25 kJ mol-1 in phase I (T > 299 K). The potential energy at the transition state of puckering is expected to decrease when the potential for the motion becomes asymmetric with decreasing temperature in phases II and III. A possible mechanism for the onset of an extraordinarily large dielectric anomaly is discussed.

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DO - 10.1021/jp310132a

M3 - Article

AN - SCOPUS:84871643426

SN - 1089-5639

VL - 116

SP - 12422

EP - 12428

JO - Journal of Physical Chemistry A

JF - Journal of Physical Chemistry A

IS - 51

ER -

Phase transition and ring-puckering motion in a metal-organic perovskite [(CH₂)₃NH₂][Zn(HCOO)₃]

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