Chain nitrogen

J. M. Rawson and J. J. Longridge, Sulfur-Nitrogen Chains Rational and Irrational Behaviour, Chem. Soc. Rev., 53 (1997). 

Although (SN)x does not react with water or acidic solutions, it slowly decomposes in alkaline solutions and it is readily oxidized. Partial bromination of (SN) or powdered S4N4 with bromine vapour yields the blue-black polymer (SNBro.4)x which has a room temperature conductivity of 2 x 10" cm . The sulfur-nitrogen chain in this... 

Table 14.1 Sulfur-Nitrogen Chains as a Function of Chain Length...

Nitrogen-chain bridged cyanines, 272. See also Thiazolocyanines, nitrogen-chain bridged... 

Figure 8.2 Four STM images (175 x 185 A) recorded over the same area of a Cu(l 10) surface during the initial exposure to NO at room temperature. There are present the (2 x 1)0 strings and isolated features which on heating (see Figure 8.1) agglomerate to form the nitrogen chains running in the < 110 > direction. (Reproduced from Ref. 12).

Important aspects of the coordination chemistry of binary chalcogen-nitrogen ligands include (a) the ability of metals to stabilize labile neutral and anionic binary S-N ligands, (b) the applications of metal complexes as reagents for the preparation of other S-N compounds, and (c) the possible incorporation of metals into sulfur-nitrogen chains to produce conducting materials. 

Another type of polymer in this category is similar to 7.10, but in which the O atoms are replaced by NH groups. These aluminum-nitrogen chains are thermally and hydrolytically unstable, and are sensitive to acids and bases.7 However, this polymer can also be drawn into fibers, which can be converted to aluminum nitride, AIN, in the presence of ammonia.68... 

Also at the molecular level, resonance is used to describe the ability of conjugated chains of atoms, primarily carbon but also including oxygen and nitrogen chains, to exhibit two arrangements of the conjugated bonds. 

The reaction of diborane(6) with bis or tris(dimethylamino)borane has recently been shown to be synthetically useful in the stepwise buildup of a boron-nitrogen chain leading to bis( -dimethylamino)triborane(9).7... 

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