Hemioxide

Synonyms cuprous oxide copper suboxide copper oxide red ide copper hemioxide... 

Phosphorus tetritoxide, P40) (Phosphorus hemioxide, P20). Phosphorous oxide, P404... 

J. J. Berzelius made phosphorous acid by treating phosphorous oxide with water —a reaction studied by T. E. Thorpe and A. E. H. Tutton, vide supra. B. D. Steele obtained it by the action of iodine on hypophosphorous acid (q.v.) in the presence of mineral acids and A. Besson, by heating the hemioxide with water in a sealed tube at 100° P20+024-3H20=2H3P0k. Phosphorous acid is also produced by the action of hot dil. nitric acid oh phosphorus the objection to this process, said J. Come, is the simultaneous production of phosphoric acid (q.v.), and this the more, the greater the cone, of the nitric acid. T. Salzer, and J. Philipp also reported that some hypophosphoric acid is produced at the same time. The early workers knew that the aq. soln. of phosphatic acid slowly decomposes, giving off phosphine, hence the faint smell like garlic. C. F. Sehonbein mentioned that freshly prepared phosphatic acid contains a trace of nitric acid as well as ozone. A. Tamm also observed that some phosphorous acid is formed when phosphated steel is dissolved in nitric acid. 

Synonyms cuprous oxide red copper oxide brown copper oxide C.I. 77402 Perenex yellow cuprocide Copper-Sandoz Caocobre cuprite copper oxide Copox copper hemioxide Copper Nordox copper protoxide copper suboxide cuprocide gicopper monoxide dicopper oxide Fungi-rhap CU-75 Fungimar Kuprite Nordox Nordox SD-45 Oleo Nordox Oleo Nordox Perecot Oleocuivre Perecot Perenox... 

Platinum-chiral bidentate ligand-tin(ll)chloride catalysts have been used in hydroformylation reactions. MeOBlPHEP, BlNAP-hemioxide, and diphosphites containing 2,4-pentanediyl and 1,3-diphenyl-1,3-propanediyl moieties have been used as a bidentate ligand (288). Pt-complexes with ferrocene-based chiral diphosphines have been screened in enantioselective hydroformylation of styrene (289). 

Copper(II) salts combined with DuPhos ligands proved to be active catalysts for the enantioselective allylboration of ketones (300). Copper(I) triflate with Me-DuPhos hemioxide has been used as an active catalytic system for the enantioselective addition of dialkylzinc to jS-nitroalkenes (301). 

Apart from the well-known titanium-dioxide phases mentioned above, other titanium oxides exists such as titanium hemioxide (Ti O), titanium monoxide (TiO), titanium ses-quioxide (Ti O,), and anosovite (TijOj). 

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