Learn about different types of chemistry. Explore the five branches of chemistry and the differences between them, including what they are and what...
Representation of models of molecular structures is a fundamental feature of communication between chemists. This paper reports on part of a large, multi‐faceted research study undertaken with undergraduate chemistry students about their understanding and use of multiple styles of representation of single...
Meanwhile, more DMF content in the dope solution produces thicker and dense sponge-like morphology on the top skin with finger-like pores underneath. A layer of smaller and loosen ridge-and-valley PA structures is formed on the thicker and dense sponge-like morphology. TFC membrane over support...
在这堂PBL课上,我们探讨了孩子们进行这项实验的意义以及它所带来的宝贵教训。Density is a fundamental property of matter that describes how closely packed the particles are within a substance. By comparing the densities of different ...
E. Molecular knots in biology and chemistry. J. Phys. Condens. Matter 27, 354101 (2015). Article Google Scholar Tubiana, L., Rosa, A., Fragiacomo, F. & Micheletti, C. Spontaneous knotting and unknotting of flexible linear polymers: equilibrium and kinetic aspects. Macromolecules 46, 3669...
PB Hitchcock,RM Matos,JF Nixon - 《Journal of Organometallic Chemistry》 被引量: 96发表: 1993年 Synthesis of cationic half-sandwich rhodium(I) complexes of 1,4,7-trithiacyclononane ([9]aneS3). The single-crystal structures of [Rh([9]aneS3)(C2H4)2]PF6,... J. CHEM. SOC. DALTON TRA...
Two novel polypyrazolylborate complexes of beryllium, [Be{B(pz)4}2] (1) and [Be3(OH)3{HB(Pz)3}3] (2), have been prepared in aqueous solution, and their X-ray crystal structures have been determined. Complex 1 contains a tetrahedral Be2+ with each ligand having bidentate coordination...
摘要: Three novel organic long π-conjugated compounds with different conjugation bridge structures were designed and synthesized. Their structures were characterized and comfirmed by elemental analysis, FT-IR and 1H NMR.关键词:π-conjugated compounds synthesis NLO ...
The structural and redox chemistry of the clusters [Fe4S4(SR)4]2 with R = t-alkyl have been investigated for the purpose of determining the structures of the same cluster in different environments and the stability of the oxidized species [Fe4S4(SR)4]1. (Me3NCH2Ph)2[Fe4S4(S-t-B...
- 《Journal of Physical Chemistry B》 被引量: 10发表: 2012年 Copigmentation evidence of oenin with phenolic compounds: A comparative study of spectrographic, thermodynamic and theoretical data The copigmentation effects of polyphenol with different structures vary greatly. Therefore, the aim of this...