Table 1.
Number of possible isomers of Alkanes, Alkenes, Alkynes (Cayley, 1875; Read, 1976; Hendrickson and Parks, 1991; Bytautas and Klein 1998; Faulon et al., 2005)
Carbon number | Number of possible isomers |
||
---|---|---|---|
Alkanes | Alkenes | Alkynes | |
1 | 1 | – | – |
5 | 3 | 5 | 3 |
10 | 75 | 377 | 171 |
15 | 4 347 | 36 564 | 15 167 |
20 | 366 319 | 4 224 993 | 1 679 869 |
25 | 36 797 588 | 536 113 477 | 208 094 977 |
30 | 4 111 846 763 | 72 253 682 560 | 27 612 603 765 |
35 | 493 782 952 902 | … | 3 838 066 701 350 |
40 | 62 481 801 147 341 | … | 551 645 375 673 949 |
45 | 8 227 162 372 221 203 | … | 81 319 947 893 937 569 |
50 | 1 117 743 651 746 950 000 | … | 12 227 375 730 982 990 115 |