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Resonance_forms_of_the_NCO,_PCO_and_AsCO_anions.png (433 × 299 pixels, file size: 9 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The yellow complex Rh(PPh 3) 3 (NCO) and orange complex Rh(PPh 3) 3 (OCN) are linkage isomers and show differences in their infrared spectra which can be used for diagnosis. [15] The cyanate ion can bridge between two metal atoms by using both its donor atoms. For example, this structure is found in the compound [Ni 2 (NCO) 2 2](BPh 4) 2. In ...
Contributing structures of the carbonate ion. In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, [1] also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.
Figure 1: The different resonance forms of the NCO and PCO anions. The values were calculated with B3LYP functional and aug-cc-pVTZ basis set using NBO/NRT analysis in GAMESS. [11] The phosphaethynolate anion is the heavier isoelectronic congener of the cyanate anion.
Isocyanates react with water to form carbon dioxide: RNCO + H 2 O → RNH 2 + CO 2. This reaction is exploited in tandem with the production of polyurethane to give polyurethane foams. The carbon dioxide functions as a blowing agent. [12] Isocyanates also react with amines to give ureas: R 2 NH + R'NCO → R 2 NC(O)N(H)R'
The cyanate (-OCN) and isocyanate (-NCO) groups have a related structure.; The nitrile (-CN) and isocyanide (-NC) groups.; The functional group fulminate (-ONC) corresponds to the fulminate ion; if the organic bond is at the other end, the nitrile oxide (-CNO) functional group is obtained instead.
Methyl isocyanate (MIC) is an organic compound with the molecular formula CH 3 NCO. Synonyms are isocyanatomethane and methyl carbylamine.Methyl isocyanate is an intermediate chemical in the production of carbamate pesticides (such as carbaryl, carbofuran, methomyl, and aldicarb).
A selenocyanate is an ion or chemical compound that contains the -SeCN group, which could be in the form of an anion, SeCN −. Organic selenocyanates also exist. Some complex ions with transition metals such as silver and mercury (mercuriselenocyanates) are known. Mercuriselenocyanate salts also include K, Fe, Co, Ni, Cu, Zn, and Cd. [1]