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Silazane

Structure of the silazane (Me3SiN)3(SiMe2)3.[1]

A silazane is a family of compounds with Si-N bonds. Usually the Si and N have organic substituents. They are analogous to siloxanes, with -NR- (R = alkyl, aryl) replacing -O-.[2]

Examples

One illustrative family of silazanes are derived from tert-butylamine, including (CH3)3SiN(H)tBu and (CH3)2Si(N(H)tBu)2.

More structurally complex is [CH3SiN(H)tBu]2(μ-N(H)tBu)2 with bridging amides.[3]

There are a wide variety of polysilazanes.

Reactions

The majority of silazanes are moisture sensitive.[4] With water they convert to silanols or siloxanes.

See also

References

  1. ^ Adamson, G. W.; Daly, J. J. (1970). "Crystal and Molecular Structure of 2,2,4,4,6,6-Hexamethyl-1,3,5-tris-(trimethylsilyl)cyclotrisilazane, C15H45N3Si6, a Compound Containing a Six-Membered Ring in the 'Boat' Form". J. Chem. Soc. A: 2724–2728. doi:10.1039/j19700002724.
  2. ^ "Silazanes". The IUPAC Compendium of Chemical Terminology. 2014. doi:10.1351/goldbook.S05669.
  3. ^ Veith, Michael (1990). "Cage compounds with main-group metals". Chemical Reviews. 90: 3–16. doi:10.1021/cr00099a001.
  4. ^ Silazane Precursors to Silicon Nitride. Defense Technical Information Center. 1984.


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