Pseudohalogens are groups formed by combination of two or more P block elements (in the periodic table) with a unit negative charge e. g. CN (CN Minus) cyanide group a combination of carbon andThe addition of pseudohalogens IX, where X NCO, N3, NO3, to 1, 5cyclooctadiene (mole ratio 1: 1) yields 1, 2monocyclic adducts. In contrast, addition of iodine in methanol activates the second pseudohalogens pdf
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pseudohalogens Compounds that resemble the halogen elements, X 2, in their chemistry, e. g. (CN) 2 cyanogen, (SCN) 2 thiocyanogen, ICN iodine cyanide. Subcategories. This category has the following 3 subcategories, out of 3 total. C Cyanogen (17 F) Cyanogen (17 F) Cyanogen halides (3 C, 2 F) pseudohalogens pdf pseudohalogen (plural pseudohalogens) ( chemistry ) A binary inorganic compound with a structure similar to that of the halogens but containing at least one nonhalogen radical such as cyanide.
The pseudohalogen concept still provides a powerful tool to understand the correlation between chemical properties, structure and bonding of pseudohalogen species. Starting from a modern version of the pseudohalogen concept, this research report gives an overview on different subjects of CN and PNchemistry dealt with in our group. pseudohalogens pdf Contents List ol important symbols 13 Introduction 16 The concept of pseudohalogens. Pseudohalides, pseudohalogens 15 Nomenclature of pseudohalogen derivatives 16 Organophosphorus pseudohalogens containing reactive disulfide or diselenide unit exhibit strong sulfur or selenium kationoid properties. The SS or SeSe bonds are very readily cleft by nucleophiles due to generation of a stable monothioacid (or selenoacid) anions. Reactions with tricoordinate phosphorus compounds are of special interest. Only the successive substitution of the hydrogen atoms in CH 3 (CH 3 ) and NH 2 (NH 2 ) by electronwithdrawing groups such as CN, NO, and NO2, leads to the class of resonancestabilized, nonlinear pseudohalogens (pseudohalides). Organometallic Compounds In simpler terms these are compounds containing metalcarbon bonds Examples: CH 3MgBr, PhLi, [Ni(CO) 4, Ferrocene etc. These compounds can be seen as having covalent bonds between the metal and the carbon atom(s).Rating: 4.66 / Views: 444