Unprecedented Formation of  cis ‐ and  trans ‐Di[(3‐chloropropyl)isopropoxysilyl]‐Bridged Double‐Decker Octaphenylsilsesquioxanes | Zendy

Ervithayasuporn Vuthichai | Zendy; Sodkhomkhum Rapheepraew | Zendy; Teerawatanad Thapong | Zendy; Phurat Chuttree | Zendy; Phinyocheep Pranee | Zendy; Somsook Ekasith | Zendy; Osotchan Tanakorn | Zendy

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Unprecedented Formation of cis ‐ and trans ‐Di[(3‐chloropropyl)isopropoxysilyl]‐Bridged Double‐Decker Octaphenylsilsesquioxanes

Author(s) -

Ervithayasuporn Vuthichai,

Sodkhomkhum Rapheepraew,

Teerawatanad Thapong,

Phurat Chuttree,

Phinyocheep Pranee,

Somsook Ekasith,

Osotchan Tanakorn

Publication year - 2013

Publication title -

european journal of inorganic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 1434-1948

DOI - 10.1002/ejic.201300283

Subject(s) - chemistry , deprotonation , silsesquioxane , solvent , nuclear magnetic resonance spectroscopy , crystallography , double salt , salt (chemistry) , sodium , proton nmr , medicinal chemistry , stereochemistry , inorganic chemistry , organic chemistry , ion , polymer

Silsesquioxane formation competing with the deprotonation of alcohol solvents in the presence of a strong base to form alkoxides is reported for the first time. Evidently, sodium isopropoxide is formed during the synthesis of the sodium salt of a double‐decker octaphenylsilsesquioxane tetrasilanolate in 2‐propanol as the solvent, which leads to the formation of unexpected cis ‐ and trans ‐di[(3‐chloropropyl)isopropoxysilyl]‐bridged double‐decker octaphenylsilsesquioxanes after in situ coupling with 3‐chloropropyltrichlorosilane. The desired products were characterized by 1 H NMR, 13 C NMR, and 29 Si NMR spectroscopy; ESI‐MS; and single‐crystal X‐ray diffraction.

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