Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Pi-Yun Cheng"'
Autor:
Hon Man Lee, Pi-Yun Cheng
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 12, Pp o3464-o3464 (2011)
In the title compound, C24H28N4O22+·2Br−·2H2O, the diimidazolium cation is located on an inversion center. The imidazole and the benzene rings make a dihedral angle of 68.08 (04)°. In the crystal, O—H...Br, C—H...O and C—H...Br hydrogen bo
Externí odkaz:
https://doaj.org/article/a6ba232d26064cc3a228efa9b87b31eb
Autor:
Hon Man Lee, Pi-Yun Cheng
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 9, Pp o2308-o2308 (2010)
In the title compound, C22H24N42+·2Br−, the imidazolium dication is located on a crystallographic inversion center. The imidazole and benzene rings make a dihedral angle of 73.1 (9)°. In the crystal, non-classical intermolecular C—H...Br hydrog
Externí odkaz:
https://doaj.org/article/91c136bbfe3a42b1bfc9b010566ab5f6
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 8, Pp m1028-m1028 (2008)
The title compound, (C22H22F2N4)[CuBr3], crystallizes with the cation situated on an inversion center and the anion on a twofold rotation axis along one Cu—Br bond. The two imidazole rings are in an anti configuration. The anion has a trigonal plan
Externí odkaz:
https://doaj.org/article/bd9a358760e640d0925e9d203738ccf8
Publikováno v:
Shizi Peiyu Yu Jiaoshi Zhuanye Fazhan Qikan, Vol 11, Iss 2, Pp 27-61 (2018)
國小數理教師的教學專業能力及其影響因素包含範圍至為廣泛。本研究資料來自國科會區塊計畫「科學/ 數學教師專業發展問卷」施測結果。本研究使用群集分析技術對上述資料主要選取七
Publikováno v:
International Journal of Science and Mathematics Education. 16:877-890
The purpose of this study was to probe the differences of perceived professional teaching competence between elementary school math/science teachers in Taiwan who are majored in math/science and those who are not. A researcher-developed Math/Science
Autor:
Yang-Wei Lin, Pi-Yun Cheng, Jui-Chien Tsai, Chi-Feng Li, Chien-Hung Chou, Pei-Yun You, Nai-Yue Hsu, Chiung-I Wang, Chun-Liang Lai
Publikováno v:
Journal of Nano Education. 7:1-9
Autor:
Pei Yun You, Chi Shun Tseng, Ying Chiao Lin, Tsai Ling Hsu, Pi Yun Cheng, Yang-Wei Lin, Yu Xuan Wu, Sheng Wen Chen, Chi Feng Lee, Huey Por Chang
Publikováno v:
Journal of Chemical Education. 92:1066-1070
The proposed experiment can help students to understand the factors involved in the stability of gold nanoparticles (Au NPs) by exploring the adsorption interaction between Au NPs and various substances. The students in this study found that the surf
Publikováno v:
Organometallics. 29:3901-3911
A palladium(0) NHC complex Pd0(LH1)2(MA) (MA = maleic anhydride) was prepared from the amide-imidazolium salt [LH1H2]Cl (H1 = NH proton; H2 NCHN proton). The X-ray diffraction studies confirmed that a η2-MA ligand and two monodentate NHC ligands wit
Publikováno v:
Inorganica Chimica Acta. 362:1840-1846
The hydrothermal reactions of 2,6-dicyanopyridine with AgX (X = NO3, ClO4, BF4) yielded intriguing network structures. The syntheses involve in situ generation of 2,6-pyridine-dicarboxamide (pcam), forming [Ag(pcam)2X]n·mH2O [X = NO3 (1), m = 0; BF4
Publikováno v:
Current Organic Chemistry. 11:1491-1524