Metalasiloxanes: New structure formation methods and catalytic properties

Palanquin-Like Cu4Na4 Silsesquioxane Synthesis (via Oxidation of 1,1-bis(Diphenylphosphino)methane), Structure and Catalytic Activity in Alkane or Alcohol Oxidation with Peroxides

“…Cage metallasilsesquioxanes (CLMSs) [1][2][3][4][5][6][7][8][9][10] are popular objects for the investigation of regularities in the insertion of metal ions into the siloxane matrix [11][12][13][14][15][16][17][18], the study of catalytic [19][20][21][22][23][24] properties, magnetic (spin) glass [25], as well as the study of nanoparticles [26] and macrocyclic siloxane material [27] formation.…”

Modern concepts and methods in the chemistry of polyhedral metallasiloxanes

“…This makes the polyvalent metal ion accessible to other reagents, thereby allowing the possibility of catalytic applications of these PHMSs. In addition to the catalytic applications (mainly in olefin polymerization) discussed in [6,7], the catalytic oxidation of benzene to phenol and of phenyl ethanol to acetophenone were demonstrated for Cu,Na-PHMSs 45-47 [83,85].…”

“…However, their chemistry differs greatly from that of other types of organosilicon compounds because the transformations of metallasiloxanes usually involve a SiOM fragment and thus the coordination properties of metals play a vital role in their structural organization. The results of previous investigations of metallasiloxanes have been reported in previous reviews] [ [1][2][3][4][5], such as the catalytic properties of polyhedral metallasiloxanes (PHMSs) in [2,[6][7][8][9][10]. The peculiarities of the syntheses and structures of PHMSs were reviewed in a traditional manner, where the compounds were classified according to the metal positions in the Periodic Table, and thus M a n u s c r i p t 2 some regularities of structure formation were not considered.…”

“…These catalytic systems are formed directly on the silicate surface [55] by the interaction between metal oxychlorides or metal siloxyderivatives and the hydroxyl groups remaining on the silica gel surface. The most promising applications of these systems are in the areas of catalytic olefin polymerization, epoxidation, and C-H bond activation [6,7].…”

Achievements in polycondensation and condensation polymers

“…These polymers are used as cat alysts, thermal stabilizers, components of thermally stable coatings, etc. [197][198][199][200][201][202][203][204][205].…”