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Phosphorus and Silicon Containing Inorganic Polymer Poly(dimethylsilane H‐phosphonate): Synthesis and NMR Spectroscopic Characterization
Author(s) -
Mitova Violeta,
Shestakova Pavletta,
Koseva Neli,
Troev Kolio
Publication year - 2019
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.201801359
Subject(s) - chemistry , dimethylsilane , phosphonate , silane , polymer chemistry , condensation polymer , polymer , monomer , silicon , solvent , nuclear magnetic resonance spectroscopy , inorganic chemistry , organic chemistry
In this paper we have demonstrated a new synthetic approach to a phosphorus and silicon containing inorganic polymer with a chain structure [‐O‐P(O)(H)‐O‐Si(CH 3 ) 2 ‐]. It has been obtained from dichlorodimethylsilane and dimethyl ester of H‐phosphonic acid taken in excess via a catalyst and solvent free process, performed in two stages. The first one involved a dealkylation reaction, which was favored by the nucleophilic attack of the chlorine atoms from the silane derivative to the α‐carbon atoms of the dialkyl H‐phosphonate. At the second polycondensation stage, the molecular mass of the product increased. In the present study, dimethyl H‐phosphonate and dichlorodimethylsilane were used at a molar ratio of 1.3:1, and the process was carried out at temperatures up to 65 °C. The structure of the new polymer was proved by multinuclear NMR spectroscopy in solution and in the solid state. The thermal properties of the polymer product were measured.