Tetramethyldiborane information

Tetramethyldiborane
Names
	IUPAC name Tetramethyldiborane(6)
	Other names Dimethylborane dimer
Identifiers
CAS Number	21482-59-7 ;
3D model (JSmol)	Interactive image;
CompTox Dashboard (EPA)	DTXSID30593298 ;
	InChI InChI=1S/C4H14B2/c1-5(2)7-6(3,4)8-5/h1-4H3 Key: DAOILNUAERZCST-UHFFFAOYSA-N; InChI=1/C4B2H14/c1-5(2)7-6(3,4)8-5/h1-4H3;
	SMILES C[B]1(C)[H][B](C)(C)[H]1;
Properties
Chemical formula	(CH; 3); 2BH; 2B(CH; 3); 2
Molar mass	83.777
Appearance	Colorless liquid
Odor	Pungent;
Melting point	−72.5 °C (−98.5 °F; 200.7 K)
Boiling point	68.6 °C (155.5 °F; 341.8 K)
Hazards
NFPA 704 (fire diamond)	2 2
Related compounds
Related alkyl boranes	trimethylborane; dimethyldiborane; diethylborane
Related compounds	Borane; tetramethyl aluminium hydride; tetramethyl gallium hydride methylalane
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

Dimethylborane, (CH₃)₂BH is the simplest dialkylborane, consisting of a methyl group substituted for a hydrogen in borane. As for other boranes it normally exists in the form of a dimer called tetramethyldiborane or tetramethylbisborane or TMDB ((CH₃)₂BH)₂.^[2] Other combinations of methylation occur on diborane, including monomethyldiborane, trimethyldiborane, 1,2-dimethylborane, 1,1-dimethylborane and trimethylborane. At room temperature the substance is at equilibrium between these forms.^[3] The methylboranes were first prepared by H. I. Schlesinger and A. O. Walker in the 1930s.^[4]^[5]

^ Baker, Charles J. (2001). The Fire Fighter's Handbook of Hazardous Materials. Jones & Bartlett Learning. p. 352. ISBN 9780962705212.
^ Srebnik, Morris; Cole, Thomas E.; Brown, Herbert C. (January 1987). "Methylborane - a remarkable unhindered monoalkylborane which achieves the controlled sequential hydroboration of representative alkenes". Tetrahedron Letters. 28 (33): 3771–3774. doi:10.1016/s0040-4039(00)96380-9.
^ Cite error: The named reference bell48 was invoked but never defined (see the help page).
^ Long, L. H.; Wallbridge, M. G. H. (1965). "646. The chemistry of boron. Part VI. New preparative methods and decomposition studies relating to methyldiboranes". Journal of the Chemical Society (Resumed): 3513–3520. doi:10.1039/JR9650003513. (subscription required)
^ Schlesinger, H. I.; Walker, A. O. (April 1935). "Hydrides of Boron. IV. The Methyl Derivatives of Diborane". Journal of the American Chemical Society. 57 (4): 621–625. doi:10.1021/ja01307a009.

[1] Baker, Charles J. (2001). The Fire Fighter's Handbook of Hazardous Materials. Jones & Bartlett Learning. p. 352. ISBN 9780962705212.

[Srebnik87-2] Srebnik, Morris; Cole, Thomas E.; Brown, Herbert C. (January 1987). "Methylborane - a remarkable unhindered monoalkylborane which achieves the controlled sequential hydroboration of representative alkenes". Tetrahedron Letters. 28 (33): 3771–3774. doi:10.1016/s0040-4039(00)96380-9.

[bell48-3] Cite error: The named reference bell48 was invoked but never defined (see the help page).

[long-4] Long, L. H.; Wallbridge, M. G. H. (1965). "646. The chemistry of boron. Part VI. New preparative methods and decomposition studies relating to methyldiboranes". Journal of the Chemical Society (Resumed): 3513–3520. doi:10.1039/JR9650003513. (subscription required)

[5] Schlesinger, H. I.; Walker, A. O. (April 1935). "Hydrides of Boron. IV. The Methyl Derivatives of Diborane". Journal of the American Chemical Society. 57 (4): 621–625. doi:10.1021/ja01307a009.

Tetramethyldiborane information

and 3 Related for: Tetramethyldiborane information

Tetramethyldiborane

Methyldiborane

Trimethyldiborane