Fig. 1
From: Non-aqueous selective synthesis of orthosilicic acid and its oligomers
Chemical structures of compounds. Orthosilicic acid (1), its condensation oligomers (2: disilicic acid, 3 and 4: linear and cyclic trisiloxanes, 5 and 6: linear and cyclic tetrasiloxanes), and starting materials 7–9 for the synthesis of 1-6 (Bn = CH2C6H5, benzyl)
