Synthesis and investigation of cross-shaped and spirocyclic heteroorganic compounds

1. The polycondensation of tetrakis(methylphenylsiloxanohydroxy)titanes and silanes proceeds according to a complex mechanism. 2. Several spirocyclic compounds with central silicone and titanium atoms and with dimethyl or methylphenyl framing at the silicone atoms in the siloxane chain were isolated. 3. The IR spectra were investigated. For all the compounds possessing the\(---O---\begin{array}{*{20}c} {\begin{array}{*{20}c} | \\ O \\ | \\ \end{array} } \\ {Si} \\ {\begin{array}{*{20}c} | \\ O \\ | \\ \end{array} } \\ \end{array} ---O--- and---O---\begin{array}{*{20}c} {\begin{array}{*{20}c} | \\ O \\ | \\ \end{array} } \\ {Ti} \\ {\begin{array}{*{20}c} | \\ O \\ | \\ \end{array} } \\ \end{array} ---O---\) groups, splitting of the asymmetrical valence vibrations of\(\left( {---\begin{array}{*{20}c} | \\ {Si} \\ | \\ \end{array} ---O---\begin{array}{*{20}c} | \\ {Si} \\ | \\ \end{array} ---} \right)\) is observed.