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In chemistry, methanium is a complex positive ion with formula [C H 5] + (metastable transitional form, a carbon atom covalently bonded to five hydrogen atoms) or [CH 3 (H 2)] + (fluxional form, namely a molecule with one carbon atom covalently bonded to three hydrogen atoms and one dihydrogen molecule), bearing a +1 electric charge.
Methine or methylylidene (IUPAC) In organic chemistry, a methine group or methine bridge is a trivalent functional group =CH−, derived formally from methane.It consists of a carbon atom bound by two single bonds and one double bond, where one of the single bonds is to a hydrogen.
CH + 5, the chemical formula of methanium, an organic ion; CH5 Deeside, part of the CH postcode area, Great Britain; Bacteriocin CH5, an antibacterial produced by Lactobacillus acidophilus; Chile Route 5, a highway in Chile; C H 5, a type of cirrus cloud; Channel 5 (disambiguation), a common name of television networks, channels and stations ...
Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
This list is sorted by boiling point of gases in ascending order, but can be sorted on different values. "sub" and "triple" refer to the sublimation point and the triple point, which are given in the case of a substance that sublimes at 1 atm; "dec" refers to decomposition. "~" means approximately.
The secondary functional groups are: a hydroxy- at carbon 5, a chloro- at carbon 11, a methoxy- at carbon 15, and a bromo- at carbon 18. Grouped with the side chains, this gives 18-bromo-12-butyl-11-chloro-4,8-diethyl-5-hydroxy-15-methoxy. There are two double bonds: one between carbons 6 and 7, and one between carbons 13 and 14.
2), diazirine (cyclic [-CH 2-N=N-]) and diiodomethane (I-CH 2-I). The decomposition can be effected by photolysis, photosensitized reagents (such as benzophenone), or thermal decomposition. [5] [10] Methylene can be produced by photolysis of diazomethane. [11] In its ultraviolet spectrum, gaseous methylene absorbs at around 141.5 nm. It was ...