Highly stable 3D homochiral coordination polymer with interweaving of double-stranded helices and extended metal-SO4-metal chains

Variable‐temperature single‐crystal X‐ray diffraction and differential scanning calorimetry (DSC) showed that the compounds (C8O5H12N)+⋅ClO4–⋅H2O (1) and (C8O5H12N)+⋅ClO4–⋅D2O (2) underwent reversible phase transitions, as confirmed by dielectric measurements also. The two compounds underwent a phase transition from room‐temperature phase with a space group of Iba2 to lower‐temperature phase with a space group of C2/c. Upon cooling, the crystalline sample of 1 showed a main endothermic peak at 213.8 K, and after using deuterium water instead of water that of 2 exhibited a main endothermic peak at 281.7 K. Compound 2 showed a relatively significantly isotope effect (Tiso= 61–68 K). The dielectric isotope effect was ca. 336.6 % [(44.4–10.1)/10.1], whereas its isotope effect ΔTc was 75 K, being in good agreement with the result of DSC measurement.

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Super Deuterated Isotope Effect in Phase Transition Materials Based on 2, 6-Dimethylaniline

Chen

Cao

Pan

2016

ChemistrySelect

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Two different porous coordination polymers regulated by the conformations of flexible ligands

Hao

Wang

Chen

2014

Inorganic Chemistry Communications

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Lattice Water-Induced Helical Stacking of Tartrate-Bridged Dinuclear Palladium(II) Complexes: The Role of Hydrogen Bonding

Ohno¹,

Sugaya

Kato

et al. 2014

Crystal Growth & Design

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Hydrous crystals of [{PdII(bpy)}2(μ-x-tart)]·nH2O (bpy: 2,2′-bipyridine; tartH2 2–: tartrate; 1a: x = l, n = 6; 2a: x = d, n = 6; 3a: x = dl, n = 4; 4a: x = meso, n = 4) and anhydrous crystals of [{PdII(bpy)}2(μ-l-tart)] (1b) were isolated from aqueous and MeOH solutions, respectively. X-ray crystallography revealed the stacked structures of clamshell-like dinuclear units in 1a–3a and 1b, where intramolecular metal–metal and π–π stacking interactions were observed. Right- and left-handed helically stacked columns were formed in the 1a and 2a crystals, respectively. The significant role of hydrogen bonding among lattice water molecules and tartrate is suggested because 1b exhibited a zigzag arrangement only through intermolecular metal–metal interactions. In 3a, l- and d-tart units stacked alternately in a zigzag arrangement with intermolecular π–π interactions. In 4a, dimeric aggregates of the twisted dinuclear units further formed a 2D sheet architecture.

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Highly stable 3D homochiral coordination polymer with interweaving of double-stranded helices and extended metal-SO4-metal chains

Cited by 7 publications

References 26 publications

Super Deuterated Isotope Effect in Phase Transition Materials Based on 2, 6-Dimethylaniline

Super Deuterated Isotope Effect in Phase Transition Materials Based on 2, 6-Dimethylaniline

Two different porous coordination polymers regulated by the conformations of flexible ligands

Lattice Water-Induced Helical Stacking of Tartrate-Bridged Dinuclear Palladium(II) Complexes: The Role of Hydrogen Bonding

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