Molecular modeling has been used to assist in the design of a new structure directing agent (SDA) for the synthesis of the AlPO 4 form of STA-2, bis-diazabicyclooctane-butane (BDAB). This is ...

Studies on the NMR methodology for characterizing the structure of polymers and biopolymers based on the understanding of the NMR chemical shift/structure correlation using solution-state and ...

The one-pot synthesis of quinazoline-2,4-diones was developed in the presence of 4-dimethylaminopyridine (DMAP) by metal-free catalysis. ... 1 H and 13 C NMR spectra were recorded on a Varian 400 or ...

The chemical synthesis of an NMR probe combines the advantages of four different nuclei, 1 H, 2 H, 13 C and 19 F, to achieve optimal resolution for these larger systems. Yun Huang David Eliezer ...

X射线衍射显示两种配合物中卟啉大环均呈现显著褶皱变形，DMAP配体采取垂直取向排列。EPR谱呈现典型菱形信号，结合 1 H NMR数据证实电子排布为(d xy) 2 (d xz d yz) 3 构型，符合高碱性轴向配体特征。 【电化学传感性能】 ...

Carbon monoxide—that invisible, odorless silent killer—could be a risk in your hotel room. Unfortunately there’s no real way of knowing how protected you are unless you take precautions.

The projects primarily include funding for carbon capture and sequestration (CCS) and decarbonization initiatives. The U.S. Department of Energy (DOE) said it concluded the projects “failed to advance ...

Learn how to interpret ¹H and ¹³C NMR spectroscopy results with this beginner-friendly guide. Understand chemical shifts, splitting patterns, integration, and structural analysis techniques.