1641-57-2

Basic information

• Product Name: Ethyl bis(trimethylsilyl)-phosphate
• Synonyms: Bis(trimethylsilyl)=ethylphosphonate;Ethyl bis(trimethylsilyl)-phosphate;Ethylphosphonic acid bis(trimethylsilyl) ester
• CAS NO: 1641-57-2
• Molecular Formula: C₈H₂₃O₃PSi₂
• Molecular Weight: 254.41
• Mol File: 1641-57-2.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Ethyl bis(trimethylsilyl)-phosphate(CAS DataBase Reference)
• NIST Chemistry Reference: Ethyl bis(trimethylsilyl)-phosphate(1641-57-2)
• EPA Substance Registry System: Ethyl bis(trimethylsilyl)-phosphate(1641-57-2)

Safety Data

• Hazardous Substances Data: 1641-57-2(Hazardous Substances Data)

Upstream product

• 2857-97-8 trimethylsilyl bromide 
• 78-38-6 ethylphosphonic acid diethyl ester 
• 74-96-4 ethyl bromide 
• 13716-45-5 diethyl trimethylsilyl phosphite 

Downstream Products

• 75-77-4 chloro-trimethyl-silane 
• 1066-50-8 Ethylphosphonic dichloride 

Relevant articles and documents

Influence of the phosphonate ligand on the structure of phosphonate-substituted titanium oxo clusters

The reaction of titanium isopropoxide, Ti(OiPr)4, with bis(trimethylsilyl) phosphonates has led to structures containingTi3O units [= Ti3(μ3-O)(μ2-OiPr) 3(OiPr)3(O3PR)

Acetic acid mediated synthesis of phosphonate-substituted titanium oxo clusters

New phosphonate/acetate-substituted titanium oxo/alkoxo clusters were prepared from Ti(OiPr)4 and bis(trimethylsilyl) phosphonates in the presence of acetic acid, which served to generate water in situ through ester formation. The process led to clusters with a higher degree of condensation than in previously known phosphonate-substituted titanium oxo clusters. The clusters [Ti6O4(OiPr)10(OAc)2(O3PR)2] (OAc = acetate) were obtained for a large variety of functional and non-functional groups R under a range of reaction conditions. This cluster type, which is also retained in solution, therefore appears to be very robust. Two other clusters, [Ti5O(OiPr)11(OAc)(O3PCH2CH2CH2Br)3] and [Ti5O3(OiPr)6(OAc)4(O3P-xylyl)2], were only isolated in special cases. Several acetate/phosphonate-substituted titanium cage compounds were obtained from the reaction of titanium isopropoxide with bis(trimethylsilyl) phosphonates in the presence of acetic acid as water generator.