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ZnP 2 has a room-temperature tetragonal form that converts to a monoclinic form at around 990 °C. [3] In both of these forms, there are chains of P atoms, helical in the tetragonal, semi-spiral in the monoclinic. [4] This compound is part of the Zn-Cd-P-As quaternary system and exhibit partial solid-solution with other binary compounds of the ...
Use of zinc pyrithione is prohibited within cosmetic products in the European Union since December 2021. [19] The substance was considered safe for use in rinse-off and leave-in products of different tested concentrations, but due to potential environmental toxicity consideration of the use of zinc pyrithione was made against potential ...
Zinc phosphide (Zn 3 P 2) is an inorganic chemical compound.It is a grey solid, although commercial samples are often dark or even black. It is used as a rodenticide. [5] Zn 3 P 2 is a II-V semiconductor with a direct band gap of 1.5 eV [6] and may have applications in photovoltaic cells. [7]
Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?
In organic chemistry, neighbouring group participation (NGP, also known as anchimeric assistance) has been defined by the International Union of Pure and Applied Chemistry (IUPAC) as the interaction of a reaction centre with a lone pair of electrons in an atom or the electrons present in a sigma or pi bond contained within the parent molecule but not conjugated with the reaction centre.
The [BAr F 4] − anion with four fluorinated aryl groups distributed tetrahedrally about a central boron atom. Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate is an anion with chemical formula [{3,5-(CF 3) 2 C 6 H 3} 4 B] −, which is commonly abbreviated as [BAr F 4] −, indicating the presence of fluorinated aryl (Ar F) groups.
Zinc pyrophosphate can be obtained from the thermal decomposition of zinc ammonium phosphate. [2]2 ZnNH 4 PO 4 → Zn 2 P 2 O 7 + 2 NH 3 + H 2 O. It can also be obtained from the reaction between sodium carbonate, zinc oxide, and ammonium dihydrogen phosphate.
Zinc cadmium phosphide arsenide (Zn-Cd-P-As) is a quaternary system of group II (IUPAC group 12) and group V (IUPAC group 15) elements.Many of the inorganic compounds in the system are II-V semiconductor materials.