Crystal Structure and Pseudopolymorphism of Bisdemethoxycurcumin-Alcohol Solvates

　Crystal structures of pseudopolymorphic (1E,6E)-1,7-bis (4-hydroxyphenyl) -1,6 heptadiene-3,5-dione (bisdemethoxycurcumin, BDMC) methanol solvate BDMC・CH3OH (1) and 2-propanol solvate BDMC・(CH3) 2CHOH (2) were determined

Synthesis, Structure, and Clathration Ability of Two-Dimensional Coordination Networks with Inclined Interpenetration

　Two-dimensional (2D) grid coordination networks with inclined interpenetration were prepared by Cd-(NO3)2 with 2,7-bis(4-pyridylmethyl)-1,3,4,5,6,8-hexafluoronaphthalene (2,7-bpfn) or 2,6-bis (4-pyridylmethyl)-1,3,4,5,7,8-hexafluoronaphthalene (2,6-bpfn) in the presence of aromatic compounds. Crystal structures of {[Cd(2,7-bpfn)2(NO3)2]・(methyl benzoate)1.5・(EtOH)0.5}n (1) and {[Cd(2,6-bpfn)2(NO3)2]・(toluene)2.5}n (2) were determined. Methyl benzoate and toluene molecules were clathrated in cyclic cavities of the grid networks through arene-perfluoroarene interactions

Development of liquid scintillator containing 8-quinolinolate indium complex for measurement of low energy solar neutrinos

An organic liquid scintillator containing indium complex was studied for a measurement of low energy solar neutrinos. The energy of the emitted electrons from those processes could be transferred to the molecular of complex via the organic solvent molecules, and the luminescence from the indium complex would be detected by the photo-multiplier. Here we report some results obtained by photo-luminescence and the γ\u27s inducedenergy spectra of tris (8-quinolinolate) indium (InQ3) complex. Benzonitrile was chosen as a solvent because of good solubility for the quinolinolate complexes (2wt%) and of good light yield for the scintillation induced by γ\u27s irradiation. The photo-luminescence emission spectra of InQ3 of 30 M solution in benzonitrile was measured. The emission maxima for InQ3 is found at 559 nm as excitation wavelength: 397 nm. We prepared InQ3 (50 mg ～ 200mg) of benzonitrile solutions (20mL). Two secondary scintillators, 100 mg of 2,5-diphenyloxazole (PPO) and 10mg of 1,4- bis[2-(5-phenyloxazolyl)]benzene (POPOP), are also dissolved in above solutions and they play a role of wavelength shifter from the UV region emitted by excited benzonitrile molecules to the visible region emitted by InQ3 complex. The energy spectra of electrons emitted by Compton scattering of incident γ\u27s using 60 Co radio isotope was obtained. These results are the first observation of the γ\u27s energy spectra using luminescent metal complexes

Synthesis and Characterization of Novel Copper(II) 2D Coordination Polymers from a Fluorinated Flexible Ligand with Remarkable Clathration Ability

Two-dimensional (2D) grid coordination polymers were prepared by the reaction of 1,4-bis(4-pyridylmethyl)tetrafluorobenzene (bpf) with Cu(NO3)2 in the presence of aromatic compounds. Crystal structures of {[Cu(bpf)2(NO3)2]·(biphenyl)2}n (1), {[Cu(bpf)2(NO3)2]·(m-C6H4(OMe)2)2}n (2), {[Cu(bpf)2(NO3)2]·PhtBu}n (3) and {[Cu(bpf)2(NO3)(H2O)]NO3·(bpf)0.5}n (4) were determined. The grid networks were held together by C–H···O and C–H···F hydrogen bonds via the NO3− anions and the tetrafluorophenylene rings of bpf, respectively. Biphenyl, m-dimethoxybenzene, t-butylbenzene, and bpf molecules were clathrated in cyclic cavities of the grid networks through arene-perfluoroarene interactions. These coordination networks have remarkable clathration ability for aromatic compounds