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hypervalent造句

"hypervalent"是什么意思   

例句與造句

  1. There is some evidence that some silyl deprotections proceed via hypervalent silicon species.
  2. Corriu and coworkers performed early work characterizing reactions thought to proceed through a hypervalent transition state.
  3. This localization of charge is accommodated by the fact that the terminal ligands are highly electronegative in hypervalent molecules.
  4. The apparent increased reactivity of hypervalent molecules, contrasted with tetravalent analogues, has also been observed for Grignard reactions.
  5. In another method diaryliodonium salts are prepared from preformed hypervalent iodine compounds such as iodic acid, iodosyl sulfate or iodosyl triflate.
  6. It's difficult to find hypervalent in a sentence. 用hypervalent造句挺難的
  7. Hypervalent bonding is described by inclusion of non-bonding MOs, as also invoked for the closely related molecule phosphorus pentafluoride.
  8. Pauling also considered hypervalent molecules, in which main-group elements have apparent valences greater than the maximal of 4 allowed by the octet rule.
  9. In 1990, Magnusson published a seminal work definitively excluding the role of d-orbital hybridization in bonding in hypervalent compounds of second-row elements.
  10. Finally, to ensure that the axial vs equatorial preference of different ligands in hypervalent compounds is reproduced, an " offset energy " term is subtracted.
  11. Other more convenient or less toxic reagents for oxidizing alcohols include dimethyl sulfoxide, which is used in hypervalent iodine compounds, such as the Dess Martin periodinane.
  12. "' ( Bis ( trifluoroacetoxy ) iodo ) benzene "',, is a hypervalent iodine compound used as a reagent in organic chemistry.
  13. There are, however, some hypervalent molecules in which the 3d level may play a part in the bonding, although this is controversial ( see below ).
  14. Atoms are labelled with the sulfur atom connected to three fluorine atoms as S " hyp " ( for hypervalent ) and S " top ".
  15. Additionally, furfural has been converted to 2-furonitrile by a number of reagents, including hydrazoic acid-perchloric acid, hypervalent iodine ( III ) and n-bromosuccinimide.
  16. The first hypervalent iodine compound, ( dichloroiodo ) benzene ( ) was prepared in 1886 by the German chemist Conrad Willgerodt by passing chlorine gas through iodobenzene in a cooled solution of chloroform.
  17. 更多例句:  下一頁

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