18173-88-1Relevant academic research and scientific papers
Supramolecular aggregates of silanols and solid-state synthesis of siloxanes
Unno, Masafumi,Takada, Keisuke,Kawaguchi, Yasuaki,Matsumoto, Hideyuki
, p. 259 - 264 (2005)
Cocrystallization of all-cis-tetraisopropylcyclotetrasiloxanetetraol and diisopropylsilanediol gave single crystals, which were proved to have a nano-size tube-like aggregate structure. Six molecules of the cyclic tetraol and four molecules of the dial form an asymmetric unit by means of hydrogen bonding. The structure and properties of the aggregates are discussed in detail, and also the possibility of solid-state synthesis of siloxanes is described.
Oxidation of Triorganosilanes and Related Compounds by Chlorine Dioxide
Grabovskiy,Kabal’nova
, p. 2391 - 2402 (2022/01/22)
Abstract: Oxidation of triethylsilane, tert-butyldimethylsilane, dimethylphenylsilane, triphenylsilane, 1,1,1,2tetramethyl-2-phenyldisilane, tris(trimethylsilyl)silane, hexamethyldisilane, tetrakis(trimethylsilyl)silane, 1,1,3,3tetraisopropyldisiloxane with chlorine dioxide was carried out. The reaction products of studied triorganosilanes with chlorine dioxide in an acetonitrile solution were the corresponding silanols and siloxanes. A mechanism explaining the formation of products and the observed regularities of the oxidation of silanes with chlorine dioxide has been proposed. A thermochemical analysis of some possible pathways in the gas phase using methods G4, G3, M05, and in an acetonitrile solution by the SMD-M05 method was carried out. The oxidation process can occur both with the participation of ionic and radical intermediates, depending on the structure of the oxidized substrate and medium.
Silane-based Resins That Can Be Photochemically And/or Thermally Structured, Single-step Method for Their Production, Parent Compounds and Production Methods That Can Be Used for Said Resins
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Page/Page column 5, (2008/12/07)
A silane resin that can be structured photochemically and/or thermally is obtained by at least partial condensation of a mixture of a) at least one silane compound RaR2bSiX4-a-b wherein R is a group polymerizabl
Stepwise Synthesis of Chain and Ring Siloxanes - Crystal Structures
Graalmann, Onno,Klingebiel, Uwe,Clegg, William,Haase, Martin,Sheldrick, George M.
, p. 2988 - 2997 (2007/10/02)
Disilanols of the type R2Si(OH)2 (1, 2: R = CHMe2, CMe3) and the fluorosilanol (Me3C)2Si(OH)F (3) serve as starting materials in the reaction with halosilanes for the stepwise construction of chain siloxanes (4 - 15, 16 - 20).Even siloxanes with bulky tert-butyl or silylamino groups are easily prepared (10, 16, 17, 20).Crystalline silanediols (2, 14, 19) are connected in chains (19) or dimeric rings (2, 14) by hydrogen bonding.The 1,3-difluoro- (18), 1,3-dihydroxy- (19), and 1-fluoro-3-hydroxydisiloxane 6 as well as the cyclotrisiloxane 21 were isolated from the reaction of F2Si(CHMe2)2 with potassium hydroxide.Directed synthesis of Si-O six-membered rings (21 - 24) is possible via reaction of 1,3-dihydroxydisiloxanes 19, 20 with di- and trihalosilanes.The crystal structures of 2, 14, and 24 are discussed.
