307496-20-4

Basic information

• Product Name: PSS-(HYDRIDODIMETHYLSILYLOXY)-HEPTACYCL&
• Synonyms: PSS-(HYDRIDODIMETHYLSILYLOXY)-HEPTACYCL&;Hydridodimethylsilyloxy-POSS(R), 1-(Hydridodimethylsilyloxy)-3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane;PSS-(Hydridodimethylsilyloxy)-Heptacyclopentyl substituted;1-(Hydridodimethylsilyloxy)-3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane;Hydridodimethylsilyloxy-POSS
• CAS NO: 307496-20-4
• Molecular Formula: C37H70O13Si9
• Molecular Weight: 975.71
• Mol File: 307496-20-4.mol
• Article Data: 1

Chemical Properties

• Melting Point: >350 °C(lit.)
• Appearance: /
• CAS DataBase Reference: PSS-(HYDRIDODIMETHYLSILYLOXY)-HEPTACYCL&(CAS DataBase Reference)
• NIST Chemistry Reference: PSS-(HYDRIDODIMETHYLSILYLOXY)-HEPTACYCL&(307496-20-4)
• EPA Substance Registry System: PSS-(HYDRIDODIMETHYLSILYLOXY)-HEPTACYCL&(307496-20-4)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 307496-20-4(Hazardous Substances Data)

Upstream product

• 183387-28-2 1,3,5,7,9,11,14-heptacyclopentyltricyclo[7.3.3.15,11]heptasiloxane-endo-3,7,14-triol 
• 1066-35-9 dimethylmonochlorosilane 
• 216972-58-6 1-hydroxy-3,5,7,9,11,13,15-hepta(cyclopentyl)pentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane 

Relevant articles and documents

New mono- and diethynylsiloxysilsesquioxanes-efficient procedures for their synthesis

Ethynyl-substituted siloxysilsesquioxanes are promising building blocks for a wide range of substances based on a POSS/DDSQ core, especially for (oligo-)polymer syntheses and modifications (the formation of hybrid materials with interesting photophysical and mechanical properties). In this study, we report on a series of new mono- and diethynylsiloxysilsesquioxanes formed via an efficient and highly selective one-pot process from silsesquioxanes with reactive Si-OH groups based on sequential condensation, hydrolysis, chlorination and substitution reactions. All newly synthesized compounds were isolated and characterized by spectroscopic methods.