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27 Jun 12:01

Synthesis of Pd(II) organometal incorporated ordered Im3m mesostructural silica and its catalytic activity in a water-medium Sonogashira reaction

New J. Chem., 2014, 38,4594-4599
DOI: 10.1039/C4NJ00652F, Paper
Fengxia Zhu, Lili Zhu, Xiaojun Sun, Litao An, Pusu Zhao, Hexing Li
A novel mesoporous Pd(II) catalyst exhibits high activity for Sonogashira coupling of aryl halides with phenylacetylene in aqueous medium.
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24 Jul 05:22

Structure of insoluble complex formed by a block copolymer of 2-ethyl-2-oxazoline and ethylene oxide and poly(methacrylic acid)

Publication date: 2 September 2014
Source:Polymer, Volume 55, Issue 18
Author(s): Yasuhiro Matsuda , Yasunori Shiokawa , Moriya Kikuchi , Atsushi Takahara , Shigeru Tasaka
Complexes that were insoluble in water were formed by mixing aqueous solutions of a block copolymer of 2-ethtyl-2-oxazoline (EOX) and ethylene oxide (EO) and those of poly(methacrylic acid) (PMAA). The structures of these complexes were investigated by the results obtained mainly by infrared spectroscopy, X-ray diffraction, and differential scanning calorimetry. The molar ratio of MAA in the complexes was also estimated by analyzing the infrared spectra. Whereas homopolymers of EOX and EO formed nearly equimolar complexes with PMAA irrespective of the feed molar ratio, the molar ratio of MAA in the complexes formed by the block copolymer and PMAA depended on the feed molar ratio. Although the infrared spectra indicated structural differences between the homopolymer of EOX and EOX in the block copolymer before forming complexes, the spectra obtained for the complexes formed by the homopolymer and the block copolymer were similar to each other.

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11 Sep 12:47

Framework isomers controlled by the speed of crystallization: different aggregation fashions of Zn(II) and 1,2,4-triazol-3-amine, distinct (3,4)-connected self-penetrating nets, and various pore shapes

Dalton Trans., 2013, 42,13802-13805
DOI: 10.1039/C3DT51454D, Communication
Ming-Biao Luo, Zi-Zun Yuan, Wen-Yuan Xu, Feng Luo, Jian-Qiang Li, Yan Zhu, Xue-Feng Feng, Shu-Juan Liu
Two exceptional framework isomers are controlled by different speeds of crystallization.
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