Synthesis, structures and dielectric properties of two five-coordinate copper (II) complexes based on N-chloromethyl-1, 4-diazabicyclo[2.2.2]octane

Liao, Wei‐Qiang; Zhou, Qin-Qin; Zhang, Yi; Jin, Lei

doi:10.1016/j.inoche.2013.04.031

Cited by 18 publications

(3 citation statements)

References 22 publications

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“…Lc hloride was synthesized according to the method reported. [24] Phase purity of 1 and 2 were verified by IR spectra (Figures S1 and S2 in the Supporting Information) and PXRD patterns, which matched very well with the simulated ones in terms of the crystal structures for 1 and 2 ( Figure S3 in the Supporting Information). CCDC 1433752 (293 K, 1), 1433753 (93 K, 1), and 1433754 (293 K, 2)contain the supplementary crystallographic data for this paper.T hese data are provided free of charge by The Cambridge Crystallographic Data Centre.…”

Section: Experimental Section Synthesessupporting

confidence: 69%

Structure‐Triggered High Quantum Yield Luminescence and Switchable Dielectric Properties in Manganese(II) Based Hybrid Compounds

Wang

Liao

et al. 2016

Chemistry An Asian Journal

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Two new manganese(II) based organic-inorganic hybrid compounds, C11H21Cl3MnN2 (1) and C11H22Cl4MnN2 (2), with prominent photoluminescence and dielectric properties were synthesized by solvent modulation. Compound 1 with novel trigonal bipyramidal geometry exhibits bright red luminescence with a lifetime of 2.47 ms and high quantum yield of 35.8 %. Compound 2 with tetrahedral geometry displays intense long-lived (1.54 ms) green light emission with higher quantum yield of 92.3 %, accompanied by reversible solid-state phase transition at 170 K and a distinct switchable dielectric property. The better performance of 2 results from the structure, including a discrete organic cation moiety and inorganic metal anion framework, which gives the cations large freedom of motion.

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Section: Experimental Section Synthesessupporting

confidence: 69%

Structure‐Triggered High Quantum Yield Luminescence and Switchable Dielectric Properties in Manganese(II) Based Hybrid Compounds

Wang

Liao

et al. 2016

Chemistry An Asian Journal

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“…Complex 1, which was recently reported by Zhang and co-workers [14], was structurally investigated at 298 K, at which 1 crystallizes in P2 1 /n, as does 4. In addition, according to the dielectric measurements, no hint of phase transition behavior was detected for 1 in the temperature range of 100-293 K. Considering the isomorphous nature of 1-4, we checked for the possibility of ferroelastic phase transition at T>293 K for 1.…”

Section: The Potential Phase Transition In Complexmentioning

confidence: 91%

Thermal-induced reversible ferroelastic phase transition in a new bromethyl-substituted molecular rotor

Wang

Huang

et al. 2015

Sci. China Chem.

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A new bromethyl-substituted molecular rotor, [Cu(dabcoCH 2 Br)(H 2 O)Br 3 ] (dabcoCH 2 Br + =1-(2-bromethyl)-1,4-diazoniabicyclo[2.2.2]octane cation), which belongs to a family of halomethyl-substituted molecular rotors, was synthesized and structurally characterized. The reversible phase transition at ca. 250 K was well established for this molecular rotor by thermal analyses, variable-temperature X-ray diffraction, and variable temperature dielectric measurements. The order-disorder transformation of the rotator part (dabco moiety) causes ferroelastic phase transition with an Aizu notation of mmmF2/m from hightemperature orthorhombic phase (Pbnm) to low-temperature monoclinic phase (P2 1 /n). More important, in reference to the density functional theory calculations and structural analyses, the key factors to tune the phase transition behaviors are discussed in detail for this family of halomethyl-substituted molecular rotors. ferroelastic phase transition, molecular rotor, confined space

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“…Dielectric constant, dielectric loss factors and conductivity properties of various compounds have been reported by in the literature [8,[34][35][36]. These properties are one of the most common techniques of evaluating solid materials.…”

Section: Introductionmentioning

confidence: 99%

Eu+3-doped chalcone substituted cyclotriphosphazenes: Synthesis, characterizations, thermal and dielectrical properties

Biryan

Demirelli

Koran

et al. 2016

Inorganica Chimica Acta

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A series of new cyclotriphosphazene derivatives (2a-e) were prepared from the reactions of substituted chalcone compounds (1a-e) containing different organic side groups at para position with cyclotriphosphazene (2) bearing dioxybiphenyl. The structures of 2a-e were approved by microanalysis and spectroscopic techniques (MS, FT-IR, 31 P, 1 H, 13 C, and 13 C-APT NMR). The thermal behaviors of compounds 2a-e were investigated by thermogravimetric analysis (TGA). These compounds were found to be stable up to about 300°C. Dielectric properties of 2a-e were measured against temperature (between 25 and 160°C at 1 kHz) and frequency (range from 100 Hz to 5 kHz at 25°C) using means of an impedance analyzer. Among them dielectric properties of methoxy substituted cyclotriphosphazene 2e were found to be higher than other phosphazenes. The compound 2b, which has the lower dielectric property values than other phosphazenes, was selected to determine the influence of Eu +3-doping on the dielectric properties of phosphazenes and doped with Eu +3 at different mole ratios. At the dielectric properties of Eu +3-doped compound 2b (with increasing molar ratios of Eu +3) was observed an excellent increasing according to Eu +3-undoped phosphazene compounds.

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Synthesis, structures and dielectric properties of two five-coordinate copper (II) complexes based on N-chloromethyl-1, 4-diazabicyclo[2.2.2]octane

Cited by 18 publications

References 22 publications

Structure‐Triggered High Quantum Yield Luminescence and Switchable Dielectric Properties in Manganese(II) Based Hybrid Compounds

Structure‐Triggered High Quantum Yield Luminescence and Switchable Dielectric Properties in Manganese(II) Based Hybrid Compounds

Thermal-induced reversible ferroelastic phase transition in a new bromethyl-substituted molecular rotor

Eu+3-doped chalcone substituted cyclotriphosphazenes: Synthesis, characterizations, thermal and dielectrical properties

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