For multiple bonds of the same type, which link the substituent to the parent group, the infixes -di-, -tri-, -tetra-, etc., are used: -diyl (two single bonds), -triyl (three single bonds), -tetrayl (four single bonds), -diylidene (two double bonds).

为此我们建议对IUPAC命名中表示基的后缀 -yl,-ylidene,diyl,ylidyne, triyl在中文命名中一一对应命名为基,亚基,叉基,次基,爪基。 考虑到国内有机化学界的使用习惯,我们建议可继续保留使用“亚基”为两种二价基的通称后缀,“次基”为3种三价基的通称后缀。

diyl 是什么意思取代基。 Substituent 烷烃、烯烃、炔烃、芳香烃等烃基 (如-CH3 (甲基)-C2H5 (乙基)等烷基)；还有-OH (羟基)，-COOH (羧基)-CHO (醛基)等等都可去一H构成基团，来代替原有机物中的H，这种基团就叫取代基。

IUPAC Polymer Nomenclature are standardized naming conventions for polymers set by the International Union of Pure and Applied Chemistry (IUPAC) and described in their publication "Compendium of Polymer Terminology and Nomenclature", which is also known as the "Purple Book". [1][2] Both the IUPAC [3] and Chemical Abstracts Service (CAS) make sim...

1,1'-联萘-2,2'-二基磷酸氢酯 或 联萘酚磷酸酯 是一种 有机化合物，化学式为C 20 H 13 O 4 P。 它可由 1,1'-联-2-萘酚 和 三氯氧磷 在 吡啶 的存在下于 四氢呋喃 （或 三乙胺 于 二氯甲烷 [3]）中反应，酸化后得到。 [4] ^ Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 ( (C) 1994-2020 ACD/Labs). [2020-12-16]. ^ Thomas Dorn, Christoph Janiak, Khalid Abu …

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diyl (chemistry) Used in descriptive names to indicate the presence of two identical substituents or functional groups attached to a central atom or structure.

The suffixes ‘yl’ (–H•), ‘ylidene’ (–2H•), ‘ylidyne’ (–3H•) denote the removal of hydrogen atoms, a subtractive operation. The suffix ‘hydryl’ denotes the additive operation, i.e., the addition of a single hydrogen atom. The prefix ‘ylo’ is used to indicate the removal of ‘H•’ from a substituent group, a subtractive operation.