si 2造句

• Dimeric silicon dioxide, ( SiO 2 ) 2 has been prepared by reacting O 2 with matrix isolated dimeric silicon monoxide, ( Si 2 O 2 ).
• In general, the alkaline-earth metals form silicides with the following stoichiometries : M II 2 Si, M II Si, and M II Si 2.
• The first published preparation of SiClF 3 by Schumb and Gamble was by exploding hexafluorodisilane in chlorine : Si 2 F 6 + Cl 2 ?! 2SiClF 3.
• When exposed to weathering, it reacts to form kaolinite ( Al 2 Si 2 O 5 ( OH ) 4, a sedimentary mineral, and silicic acid ):
• Other compounds of the general formula Si 2 X 6 ( X = hydride, halide, alkyl, aryl, and mixtures of these groups ) are called disilanes.
• "' Hexachlorodisilane "'is the inorganic compound with the chemical formula Si 2 Cl 6, It is a colourless liquid that fumes in moist air.
• For example, the K-feldspar [ KAlSi 3 O 8 ], albite [ NaAlSi 3 O 8 ] and anorthite [ CaAl 2 Si 2 O 8 ].
• The mineral hisingerite, an iron silicate, with the formula Fe 3 + 2 Si 2 O 5 ( OH ) 4 ?H 2 O, is named after Hisinger.
• Examples of heavy-fermion materials with well-studied quantum-critical properties are CeCu 6-x Au, CeIn 3, CePd 2 Si 2, CeCoIn 5.
• URu 2 Si 2 has the same'122'- crystal structure as K . Below this temperature, it is magnetic, and below about 1 K it superconducts.
• An example of this is seen in the figure above : High-resolution spectrum of an oxidized silicon wafer in the energy range of the Si 2 " p " signal.
• The meteorite is classified as an enstatite chondrite with unusually large proportions of pure iron ( 29 % ), enstatite and the extremely rare mineral sinoite ( Si 2 N 2 O ).
• In contrast, Mg-rich olivine does not occur stably with silica minerals, as it would react with them to form orthopyroxene ( ( Mg, Fe ) 2 Si 2 O 6 ).
• Sphalerite ZnS ( primary ) alters to secondary hemimorphite Zn 4 Si 2 O 7 ( OH ) 2 . H 2 O, smithsonite ZnCO 3 and manganese-bearing willemite Zn 2 SiO 4.
• "' Sinoite "'is rare mineral with the chemical formula Si 2 N 2 O . It was first found in 1905 in chondrite meteorites and identified as a distinct mineral in 1965.
• Hence, M II Si with their zigzag chains of Si 2  " anions ( containing two lone pairs of electrons on each Si anion that can accept protons ) yield the polymeric hydride ( SiH 2 ) x.
• Bone china consists of two crystalline phases, anorthite ( CaAl 2 Si 2 O 8 ) and ?-tricalcium phosphate / whitlockite ( Ca 3 ( PO 4 ) 2 ) embedded in a substantial amount of glass.
• Slowly ( because this started before geometry optimization was widespread ), it became clear that linear Si 2 H 2 was a transition structure between two equivalent trans-bent structures and that it was rather high in energy.
• This structure is predicted to be a local minimum, i . e . an isomer of Si 2 H 2, lying higher in energy than the ground state but below the energy of the trans-bent isomer.
• The octahedral chains are joined in the ac plane by SiO 4 and Si 2 O 6 ( OH ) groups, forming five-member rings of two octahedra and three tetrahedral ( Allman and Donnay, 1973 ).