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叶立德(YIide)化合物,一般的说就是指元素周期表的第Ⅴ或第Ⅵ族元素的原子作为电子对的给予体而带有正电荷,并直接与带有未共用电子对的碳原子相连而成的一类亚甲基化合物[1]。例如:
YIide compounds generally means that the atoms of Group V or Group VI elements of the Periodic Table bear the positive charges as donors to the electron pair and are directly linked to the carbon atoms with the unshared electron pair Into a class of methylene compounds [1]. E.g: