Highlights of Nitrogen Chemistry

Nitrogen Oxides Nitrogen is remarkable for having six stable oxides, each with a positive heat of formation because of the great strength of the N=N bond (Table 

Unlike the hydrides and halides of nitrogen, the oxides are planar. Nitrogen displays all its positive oxidation states in these compounds, and in N2O and N2O3, the two N atoms have different states. Of special interest are NO and NO2. 

Nitrogen monoxide (NO also called nitric oxide) is an odd-electron molecule (see Section 10.1) with recently discovered biochemical functions ranging from neurotransmission to control of blood flow. Its commercial preparation occurs through the oxidation of ammonia during the production of nitric acid  

Dinitrogen monoxide (dinitrogen oxide nitrous oxide) 

Nitrogen monoxide (nitrogen oxide nitric oxide) 

Colorless gas used as dental anesthetic ( laughing gas ) and aerosol propellant 

Orange-brown, paramagnetic gas formed during HNO3 manufacture poisonous air pollutant 

Colorless, volatile solid consisting of N02 and NQj gas consists of N2O5 molecules 

It also forms when air is heated to high temperatures in a car engine  

---

Highlights of Nitrogen Chemistry Highlights of Phosphorus Chemistry... 

Further reactions convert NH3 to NO, NO2, and HNO3 (Highlights of Nitrogen Chemistry ). Hydrides of some other group members are formed from reaction in water (or with H30" ) of a metal phosphide, arsenide, and so forth ... 

The Wide Range of Physical Behavior Patterns in Chemical Behavior Highlights of Nitrogen Chemistry Highlights of Phosphorus Chemistry... 

How the Oxygen and Nitrogen Families Compare Physically How the Oxygen and Nitrogen Families Compare Chemically Highlights of Oxygen Chemistry Highlights of Sulfur Chemistry... 

No carbonyl chemistry of scandium and yttrium has been reported yet and there is also no cyanide chemistry of these two elements although thiocyanato complexes of scandium [Sc(NCS)6]3 (bonded through nitrogen) are known. The important developments involving scandium or yttrium with carbon have involved the fullerene derivatives of these elements. There have been some scandium carbide systems prepared but these will be highlighted in the chemistry of the halides. 

It is worthwhile introducing these ring systems with a brief survey highlighting the main features of the various systems. All are based either on pyrrole 7 or pyridine 8. The distinction between the two types of nitrogen atoms present in these rings is an extremely important part of understanding aromatic heterocyclic chemistry. 

The present review follows many major updates of Ue,6. 10-21 gp many, in fact, that this author is reminded of Will Rogers comment that communism was one-third practice and two-thirds explanation. Instead of covering most highlights of UE (already given elsewhere this review concentrates on the interesting chemistry and physics of zwitterions based on the coupling of tertiary nitrogen compounds with 7,7,8,8-tetracyanoquinodimethan (TCNQ, 7). 

Angeli was one of the most prolific chemists of his time his research focused on nitrogen chemistry, particularly the oxygen-containing acids of the diazo-compounds, and in the field of natural products. Prescient were his studies of constitution and smell, where he related olfactory activity to oxidation capacity, highlighting the chemistry and physiology of smell. His research in aromatic compounds was original and fundamental. To his work on benzene derivatives, he added research on heterocycles such as pyrrole, furan and indole. 

---