The so-called sigma hole is the key-concept for the understanding of halogen bonds. Although it was initially revealed by inspecting the electrostatic potential [1-5], it can also be unveiled by other functions derived from the electron density, like the electron density laplacian [6] or the...
Sigma-hole造成的次级键作用在p区结构化学中有十分重要的作用。立足于此类相互作用的催化等应用也因此应运而生。此文简单地介绍一下此类相互作用。 Ref: ①Lim and Beer, Sigma-Hole Interactions in Anion Recognition, Chem (2018),doi.org/10.1016/j.chemp ②Han, Zhumin et al. “Imaging the halogen bon...
OptoSigma is part of the Sigma Koki Group and our global brand name. With global headquarters in Japan and subsidiaries in North America, Europe and Singapore, we cover the globe to support your projects anywhere! Click here to learn more. ...
They are responsible for many noncovalent bonding interactions, such as halogen bonding. sigma-Holes make 'negatively charged' atoms act as if they were 'positively charged'. The existence of sigma-hole bonding emphasizes what has been called 'the fallacy of net atomic charges', which means ...
Linear sigma-hole center dot center dot center dot C equivalent to O center dot center dot center dot sigma-hole intermolecular interactions between carbon... Carbon monoxide can interact with two dihalogen mo Zhou,Pan-Pan,Yan,... - 《Journal of Molecular Graphics & Modelling》...
OptoSigma is part of the Sigma Koki Group and our global brand name. With global headquarters in Japan and subsidiaries in North America, Europe and Singapore, we cover the globe to support your projects anywhere! Click here to learn more. ...
Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The ...
ON THE CRYSTAL STRUCTURE OF A NUMBER OF NON-STOICHIOMETRIC MIXED LEAD OXIDE HALIDES COMPOSED OF PbO LIKE BLOCKS AND SINGLE HALOGEN LAYERS. A series of non-stoichiometric compounds of approximate formulae 7PbO multiplied by (times) RO//y multiplied by (times) PbX//2 has been prepared; R equa...
Penta prisms derive their name from their 5-sided pentagon shape. Penta Prisms are very useful in applications requiring precise 90 degree deviation without inversion or flipping the image orientation. Light incident on the input face will exit devi
Halogen Fiber Illumination Ring Illumination Optical Devices Automatic Shutters and Irises Cameras Laser Autocollimators Laser Beam Collimation Checkers Laser Checker Resolution Targets And IR-UV Cards Beam Profilers Amplifiers Optical Power and Energy Meters Stand-Alone Power Meters PC USB Power Meters ...