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1.174 546 744 990 17 × 10 19: C 46 H 94: n-hexatetracontane: 47 58 481 806 621 987 010: 3.659 736 342 498 25 × 10 19: C 47 H 96: n-heptatetracontane: 48 156 192 366 474 590 639: 1.141 606 809 779 03 × 10 20: C 48 H 98: n-octatetracontane: 49 417 612 400 765 382 272: 3.564 926 050 353 17 × 10 20: C 49 H 100: n-nonatetracontane: 50 1 117 743 ...
In chemistry, a hydrocarbon is an organic compound consisting only of carbon and hydrogen. They all consist of carbon backbone and atoms of hydrogen attached to that backbone, also see aliphatic hydrocarbons.
The formula for acyclic saturated hydrocarbons (i.e., alkanes) is C n H 2n+2. [1]: 623 The most general form of saturated hydrocarbons, (whether linear or branched species, and whether with or without one or more rings) is C n H 2n+2(1-r), where r is the number of rings. Those with exactly one ring are the cycloalkanes.
The longest possible main alkane chain is used; therefore 3-ethyl-4-methylhexane instead of 2,3-diethylpentane, even though these describe equivalent structures. The di-, tri- etc. prefixes are ignored for the purpose of alphabetical ordering of side chains (e.g. 3-ethyl-2,4-dimethylpentane, not 2,4-dimethyl-3-ethylpentane).
For hydrocarbons: alkene (unsaturated) vs alkane (saturated) alkyne (unsaturated) vs alkane (saturated) arene (unsaturated) vs cycloalkane (saturated) For organic compounds containing heteroatoms (other than C and H), the list of unsaturated groups is long but some common types are:
CO 2 + 4 H 2 → CH 4 + 2 H 2 O. It is probable that our current deposits of natural gas were formed in a similar way. [37] Certain types of bacteria can metabolize alkanes: they prefer even-numbered carbon chains as they are easier to degrade than odd-numbered chains. [38] Alkanes play a negligible role in higher organisms, with rare exception.
The prefix consists of three numbers that are arranged in descending order, separated by dots: [2.2.1]. Before the numerical prefix is another prefix indicating the number of rings (e.g., "bicyclo+"). Thus, the name is bicyclo[2.2.1]heptane. Cycloalkanes as a group are also known as naphthenes, a term mainly used in the petroleum industry. [4]
C 20 H 16 O 4 S 2: c.i. vat orange 5: 3263-31-8 C 20 H 17 ClO: methoxytriphenylchloromethane: 14470-28-1 C 20 H 17 ClN 2 O 3: ketazolam: 27223-35-4 C 20 H 18 NO 4: berberine: 2086-83-1 C 20 H 18 N 2 O: benzoin phenylhydrazone: 574-07-2 C 20 H 18 O 2 Sn: triphenyl tin acetate: 900-95-8 C 20 H 18 O 5: Wighteone and other molecules: 51225-30-0 C ...