condensed structural formula; rational formula
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
condensed structural formula; rational formula (in chemistry)
In organic chemistry, a notation that explicitly shows functional groups (e.g., —OH, —CHO, —COOH) and the carbon skeleton while condensing the notation of carbon-hydrogen bonds. For example, ethanol is written as CH₃CH₂OH rather than showing all individual bonds. Contrast with molecular formulas (showing only atom counts) and full structural formulas (showing all bonds). See also 结构式 (structural formula).
Yǐ乙
chún醇
de的
shì示
xìng性
shì式
wéi为
CC
HH
3₃
CC
HH
2₂
OO
HH
。
The condensed structural formula of ethanol is CH₃CH₂OH.
Jiǎ甲
mí醚
de的
shì示
xìng性
shì式
shì是
CC
HH
3₃
OO
CC
HH
3₃
。
The condensed structural formula of methyl ether is CH₃OCH₃.
Show 1 more exampleShow fewer examples
Shì示
xìng性
shì式
bǐ比
jié结
gòu构
shì式
gèng更
jiǎn简
jié洁
，
dàn但
néng能
qīng清
chǔ楚
de地
xiǎn显
shì示
fēn分
zǐ子
zhōng中
de的
guān官
néng能
tuán团
。
The condensed structural formula is more concise than the full structural formula, but clearly displays the functional groups in the molecule.