Methylamines description

An orbital hybridization description of bonding in methylamine is shown in Figure 22.2. Nitrogen and carbon are both s/r -hybridized and are joined by a a bond. The unshared electron pair on nitrogen occupies an s/r -hybridized orbital. This lone pair-is involved in reactions in which fflnines act as bases or nucleophiles. The graphic that opened this chapter is an electrostatic potential map that clearly shows the concentration of electron density at nitrogen in rnethylanine. 

Our canvas here is to provide a qualitative description of current models for the NM-M transition, developed for both metal-ammonia and metal-methylamine solutions. For this purpose we also draw upon interpretations from other systems in which the transition from localized to itinerant electron regimes is well recognized (78). 

N, N Dhnelhyl-2,4 diniiro m-phenyleTiediamine, (02N)gCeH2CNH.013)2 yel crysts, mp mp 169—70° was prepd by action of an ale soln of methylamine on 2,4,6-trinitromethyl aniline or on 2,4 dinitro-3-methylamino-dimethylaniline in a tube at 125°(Refs 2 5) /V -bimethyl-4,6 dmitro-rr phenylenedia-mine, HaN.CfiHaCNO 3) N(CH 2 n o description given in CA or in Beil was prepd by action of ale ammonia on 2,4,6- trinitro-dimethylaniline (Refs 3, 5 6)... 

An orbital hybridization description of bonding in methylamine is shown in Figure 22.2. Nitrogen and carbon are both yp -hybridized and are joined by a ct bond. The... 

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