Tris(Trimethylsiloxy)Boron

Catalog Number	ACM4325853
CAS Number	4325-85-3
Structure
Synonyms	Tris(trimethylsilyl)borate, Tris(trimethylsilyl) borate, 348635_ALDRICH, MolPort-003-930-755, CID78020, T2543, Silanol, trimethyl-, triester with boric acid (H3BO3), Silanol, 1,1,1-trimethyl-, 1,1,1-triester with boric acid (H3BO3), 4325-85-3
IUPAC Name	tris(trimethylsilyl) borate
Molecular Weight	278.38 g/mol
Molecular Formula	C9H27BO3Si3
Canonical SMILES	B(O[Si](C)(C)C)(O[Si](C)(C)C)O[Si](C)(C)C
InChI Key	YZYKZHPNRDIPFA-UHFFFAOYSA-N
Boiling Point	184 °C
Melting Point	-35 °C
Flash Point	42.8 °C
Purity	0.97
Density	0.82 g/mL
Appearance	colorless clear liquid.
Application	Tris(Trimethylsiloxy)Boron serves as a versatile component in both organic synthesis and lithium battery technology. Its application as an additive in lithium battery electrolytes enhances the longevity and efficiency of high-voltage cathode materials such as LiMn2O4, LiNi0.5Co0.2Mn0.3O2, LiNi0.5Mn1.5O4, and lithium-rich oxides. This additive is particularly useful in improving cycle performance by forming a protective, thin, and dense cathode electrolyte interphase (CEI) film enriched with silicon and boron compounds. This film effectively reduces interfacial resistance growth during battery cycling. Moreover, Tris(Trimethylsiloxy)Boron alters the solvation structure of lithium ions, facilitating their mobility and interaction with the electrolyte, which is crucial for maintaining battery performance at elevated temperatures.
Storage	Flammables area
Exact Mass	278.13600
Packaging	10 g; 100 g;
Refractive Index	1.386(lit.)