Inorganic Amides and Imides

Inorganic Amides and Imides A168 to A170 Inorganic Azides A320 to A623 Introduction (to this volume) I-II... 

Amides and Imides, Inorganic. An inorganic amide, also called ammonobase, is a compd in which one hydrogen in ammonia is replaced by a metal, as for instance sodamide, NaNHj. An inorganic imide is a compd in which two hydrogens are replaced by metals, eg, lead imide, PbNH... 

Beekc-Goehring, M. Amides and Imides of the Oxyacids of Sulfur, in Emeleus and Sharpens Advances in Inorganic Chemistry and Nuclear Chemistry, Yol. II, 159-194, Academic Press, Inc., New York (1960). 

The crystal chemistry of solid inorganic nitrides, azides, amides and imides is reviewed systematically. Many of the structures unique to nitrides are illustrated and analyzed. We give full crystallographic data for all compounds with well determined structures and list derived bond valences and Madelung potentials. Similarities to and differences from oxide chemistry are pointed out and general principles relating to structure and bonding in nitrides are elucidated. 

Direct evidence for the presence of nitrile groups in the residue of a PAM sample heated to 250 °C and held for 1.5 hours is obtained by FT-IR, which shows the characteristic nitrile (C N) absorption at 2239 cm h The spectrum also shows the presence of isocyanide groups (2168 cm" ) as well as either inorganic cyanide or diazo (2052 cm" ). In addition one can see evidence of amide groups (3340, 3211, 1686 and 1620 cm" ) and imide groups (C=0 absorption above 1700 cm" ). 

H. G. Heal, Amides, Imides and Nitrides of Sulfur, in Inorganic Sulfur Chemistry, F. H. Pollard and G. Nickless (eds.), Elsevier Publishing Company, Amsterdam (in press). 

This is a classic area of inorganic chemistry dating back to the middle of the last century and only a brief outline will be possible. It will be convenient first to treat the sulfur nitrogen oxides and then the amides, imides and nitrides of sulfuric acid. Hydrazides and hydroxylamides of sulfuric acid will also be considered. Some of these compounds have remarkable properties and some are implicated in the lead-chamber process for the manufacture of H2SO4 (p. 708). The field is closely associated with the names of the great German chemists E. Fremy ( 1845),... 

---