Metal nitrogen halides

The bonding mode is dependent on the nature of the metal centre as well as the steric or electronic properties of the imido substituent. For example, the M(CO)5 unit in the (AO-trigonal complex [W(CO)5 S(NMe)2 ] undergoes a 1,3-shift between the two nitrogen donors, whereas the tert-butyl forms a N,N -chelated [W(CO)4 S(NtBu)2 ] complex, as is also observed with main-group metal halides, e.g., [SnCl4 E(NtBu)2 ] (E=S, Se).153... 

The allylic ion (XI) is probably too stable to propagate the reaction. The inhibiting (poisoning) effect of oxygen, nitrogen, and sulphur compounds is also due to formation of stable ions (in so far as it is not due to sequestration of metal halide by complex formation), e.g., the reaction [98] ... 

In general, correlation corrections are larger for a holes than for ir holes. It is not unusual for these differential correlation effects to change the predicted order of final states. Heterocyclic organic molecules with nitrogen-centered, nonbonding electrons are not alone in this respect. Organometallics, transition metal complexes, and clusters of metal oxides and metal halides also require this kind of theoretical interpretation. 

No, the editor didn t know what this name meant either.) It means salts of the triva-lent anions of Group V, restricted in [1] to arsenides, antimonides and bismuthides and prepared by reaction of sodium pnictides with anhydrous halides of transition and lanthanide metals. This violently exothermic reaction may initiate as low as 25°C. Avoidance of hydrated halides is cautioned since these are likely to react uncontrollably on mixing. Another paper includes a similar reaction of phosphides, initiated by grinding [2], Nitrides are reported made from the thermally initiated reaction of sodium azide with metal halides, a very large sealed ampoule is counselled to contain the nitrogen [3],... 

The inevitable introduction of acids such as hydrochloric, hydrofluoric, bases, metallic halides, carbonates and gases like carbon dioxide and nitrogen create another set of problems for the seal. The oil field duty condition is very critical and unique, and therefore there is very little technology transfer potential. 

Because of the deficiency in carbon, it was expected that free carbon would not form on carbides made from transition metal halides and any of the above carbon-nitrogen compounds, that are rich in nitrogen. In the reaction ... 

---