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Lin Ye Zeng-guo Feng Xiao-wen Zhang Qian Qin Ying Bai Feng Wu Shi Chen Guo-qing Wang
《高分子科学》2006,(5):503-513
《高分子科学》2006,(5):503-513
Two oxetane-derived monomers, 3-(2-cyano-ethoxy)methyl- and 3-(methoxy-(triethylenoxy))methyl-3′-methyloxetane (COX and MTOX), were prepared from 3-hydroxymethyl-3-methyloxetane. Their homo- and co-polymerization in solution were carried out by the cationic ring-opening polymerization with BF3•Et2O and 1,4-butanediol as co-initiator. The molecular weight and molecular weight distribution were determined using GPC so as to reveal the competition and interchange between active chain end (ACE) and activated monomer (AM) mechanism in the process. The reactivity ratios of the two monomers were calculated according to Kelen-Tudos using 1H-NMR analysis. The influence of functional side chains in the monomers on the copolymerization behaviors was discussed in virtue of the reactivity ratio data. When doped with lithium salt LiTFSI, the ion conductivity of the homopolymer of MTOX reached 10-3.58 S/cm at 30℃ and 10-2.73 S/cm at 80℃, respectively, showing its potential to be used as polymer electrolyte for lithium ion battery. 相似文献
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A. López-Delgado O. García-Martínez M. Gálvez-Morros 《Journal of Thermal Analysis and Calorimetry》1988,34(3):843-852
A new iron basic salt, Fe4(OH)11NO3·2H2O, has been prepared by partially hydrolyzing a solution of Fe(NO3)3·9H2O with urea.
The X-ray powder diffraction pattern has been indexed within a monoclinic cella=9.99(3) ?,b=9.48(2) ?,c=3.074(3) ? andβ=90.57(1)°.
Thermal decomposition reactions in still air and nitrogen flow have been studied by DTA and TG analysis, and the intermediate
and final products have been characterized by X-ray diffraction and IR spectroscopy. When this material is thermally decomposed
in an X-ray high temperature diffraction chamber, pure iron is formed at 900 °C together with Fe(III) and Fe(II) oxides.
The authors are greateful to Dr. R. M. Rojas for his helpful suggestions. 相似文献
Zusammenfassung Mittels Hydrolyse einer L?sung von Fe(NO)3)3·9H2O mit Karbamid wurde das neue basische Eisensalz Fe4(OH)11NO3·2H2O dargestellt. Aus einem R?ntgenpulververfahren resultierena=9,55(3) ?,b=9,48(2) ?,c=3,074(3) ? undβ=90,57(1)° für eine monozyklische Zelle. Mittels DTA- und TG-Untersuchungen wurden die thermischen Zersetzungsreaktionen an Luft und im Stickstoffflu? untersucht und die Zwischen- und Endprodukte mit r?ntgendiffraktionsverfahren und IR-Spectroskopie charakterisiert. Bei einer thermischen Zersetzung dieses Stoffes in einer Hochtemperatur-r?ntgendiffraktionskammer wird bei 900 °C elementares Eisen zusammen mit Fe(II)- und Fe(III)-oxiden gebildet.
Резюме Частичным гидролизо м раствора соли Fe(NO3)3 · 9H2O с мочевиной получен а новая основная соль Fe4(OH)11NO3 · 2Н2О, для которой методо м порошкового рентген оструктурного анализа была установ лена моноклинная стр уктура с параметрами ячейкиа=9,55(3) А,b=9,48(2) ?,c=3,074(3) ? иβ=90,57(1)°. Термиче ское разложение соли изучено методом ДТА и ТГ в динамическо й атмосфере воздуха и азота, а образующиеся промеж уточные и конечные продукты ре акции были охарактер изованы рентгенофазовым ана лизом и ИК спектроскопией. ˉПри термическом разложе нии соли в высокотемпературно й рентгено-диффракци онной камере при 900° образует ся чистое железо вмес те с оксидами двух- и трехвалентного желе за.
The authors are greateful to Dr. R. M. Rojas for his helpful suggestions. 相似文献
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配体C9H7R(R=CH2CH2CH3 (1),CH2(CH3)2 (2),C5H9 (3),CH2C6H5 (4),CH2CH=CH2 (5))分别与Ru3(CO)12在二甲苯或庚烷中加热回流,得到了6个双核配合物[(η5-C9H6R)Ru(CO)(μ-CO)]2(R=CH2CH2CH3 (6),CH2(CH3)2 (7),C5H8 (8),CH2C6H5 (9),CH2CH=CH2 (10))和[(η5-C9H6)(H3CH2C)CHCH(CH2CH3)(η5-C9H6)] [Ru(CO)(μ-CO)]2 (11).通过元素分析、红外光谱、核磁共振氢谱对配合物的结构进行了表征,并用X-射线单晶衍射法测定了配合物6,9,10和11的结构. 相似文献
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《中国化学》2003,(7)
AISA,Haji Akber······……720CAI,Jun一Chao············……720CAI,Shu一Hul············……746CHEN,Di一Hua·········……937CHEN,Dong一Lin·‘·······……871CHEN,Jin一Chun·········……904CHEN,Ping···············……979CHEN,Qiao一Ho飞······……871CHEN,Qing一Hua······……‘二805CHEN,Qing一Yun·········……898CHEN,Xiao一Ming······……858CHEN,Xue一Song·········……937CHEN,… 相似文献
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