Cyanamide ion

Similar differences are found for organic azides (e.g. MeN3). In ionic azides (p. 417) the N3 ion is both linear and symmetrical (both N-N distances being 116 pm) as befits a 16-electron species isoelectronic with CO2 (cf. also the cyanamide ion NCN, the cyanate ion NCO, the fulminate ion CNO and the nitronium ion N02 ). 

The reaction CaC2 I N, CaCN2 + C produces calcium cyanamide, which has been widely used as a fertilizer. Draw the structure of the cyanamide ion and describe the bonding. 

Formula CaCN2 MW 80.11 cyanamide ion is linear and structurally similar to CO2 Structure N = CN = Ca Synonyms calcium carbimide lime nitrogen nitrolime... 

The relationship between carbon dioxide, the cyanate ion, and the cyanamide ion is shown ... 

The cyanamide ion, CN22-, contains 16 valence shell electrons and has the linear structure... 

The structures of the azide ion (Nj ), the cyanamide ion (CN/ ) and the fiilminate ion (CNO ) are closely related and the decompositions of some metal cyanamides and fulminates are therefore considered here. 

Caio(P04)6(OH)2.2x(0" )xDx + 1/2 y02 Caio(P04)6(OH)2.2x(0 -)x-y(02 )yDx where some of the O ions in the OHAp anion channels are oxidized to the 02 ions without any disruption of other structural constituents. Similarly, Trombe and Montel (1981) reported the presence of the cyanamide ions, NCN, in the c-axis anion channels, as indicated by the formation of Caio(P04)6(NCN)D from heating of A-type carbonate apatite in an atmosphere of NH3 at 600 to 900°C. Dowker and Elliott (1983) suggested that the NCN ions may be located at a position similar to that of NCO ions. Dugas et al. (1978) suggested that the nonlinear N02 ions are also present in the anion channels and oriented with the 0-0 direction parallel to the c-axis. 

Activation of the amidol to promote nucleophilic attack by the cyanamide ion is the most likely mechanism of the reaction. 

The extremely high friction sensitivity of the crystalline form of SA prohibited its usefulness in the early days. Taylor and Rinkenbach found that mixing fairly concentrated solutions of silver nitrate and sodium azide yielded silver azide in a form of colloidal aggregates. This form of SA is less sensitive than crystals [5, 65]. Another method of decreasing the sensitivity of SA is based on the addition of an inert absorbent material to the solution of SA. In this way, individual crystals are separated from each other by the inert material [89]. The presence of some substances (e.g., cyanamide ion) during precipitation of SA can, however, increase the decomposition rate and decrease its explosion temperature [90]. 

Draw Lewis, VSEPR, and VBT diagrams of the symmetric cyanamide ion, CN . 

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