Homoleptic Metal II Amides Synthesis, Structures and Physical Properties

2 Homoleptic Metal(II) Amides Synthesis, Structure.s and Physical Properties 

In our 1980 book, the homoleptic Group 14 metal(ll) amides M N(R )R ]2 there reported were those with M = Ge and P R SiMe, SiEt, GeMe, GeEt, 

The majority of the crystalline amides listed in Tables 9.1-9.3 are V-shaped Group 14 metal-centred monomers. Exceptions are Bii Si[OSi(Me)2N(Ph) 3Ge-Li (thf), which has a long Ge-Li contact of 2.904(12) A, the three-coordinate tin(II) amides. Sn( Mc,)( i- Mej) j. SnljNCRXCHajalaNMe] SnzSizCNBu je  

Computational studies on isoleptic silylenes and germylenes EN(R)CH2CH2NR (e.g. 4, 

E = Si) and EN(R)CH=CHNR (e.g. 2, E = Si) (R = H, Bu ) have been reported it was concluded that there is significant p -p -delocalisation for the latter compounds. The relationship between stability, acid-base and spin properties, nucleophilicity and electrophilicity in a series of silylenes was studied by conceptual density functional theory.  

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