Silazane

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.

References

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.
"Silazanes". The IUPAC Compendium of Chemical Terminology. 2014. doi:10.1351/goldbook.S05669.
Veith, Michael (1990). "Cage compounds with main-group metals". Chemical Reviews. 90: 3–16. doi:10.1021/cr00099a001.
Silazane Precursors to Silicon Nitride. Defense Technical Information Center. 1984.

[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.

1

2

3

4

Examples

Reactions

See also

References