| 单词 | electron-deficient |
| 释义 | > as lemmaselectron-deficient electron-deficient adj. Chemistry having fewer electrons than normal; spec. containing a chemical bond in which a pair of electrons is shared between more than two atoms. ΚΠ 1939 Jrnl. Amer. Chem. Soc. 61 1597/2 It is suggested that the common factor in these reactions is the electron-deficient nature of the catalyst. 1955 Q. Rev. Chem. Soc. 9 176 The boron hydrides and some of their derivatives are examples of electron-deficient compounds. 1995 D. M. P. Mingos Essent. Inorg. Chem. 1 (1997) 30 An electron deficient molecule has fewer valence electrons involved in covalent bonds than the number of orbitals available. 2002 New Scientist 2 Feb. 21/2 On the opposite side, they placed an electron ‘collector’ doped with electron-deficient impurities. These have lots of missing electrons, effectively creating positive ‘holes’. < as lemmas |
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