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| # | Species | Formula |
| 658 | 2,2-Bipyridyl | C10H8N2 | |
| 659 | 2,4-Bipyridyl | C10H8N2 | |
| 660 | 4,4'-Bipyridine | C10H8N2 | |
| 661 | 2,3-Dimethyl quinoxaline | C10H10N2 | |
| 662 | alpha N,N-dimethylamino phenylacetonitrile | C10H12N2 | |
| 663 | Ethyl(1,1-dimethylpropyl)malonodinitrile | C10H16N2 | |
| 664 | Meso-2,3-diethyl-2,3-dimethylsuccinodinitrile | C10H16N2 | |
| 665 | Methyl(1,1,2-trimethylpropyl)malonodinitrile | C10H16N2 | |
| 666 | Phenazine | C12H8N2 | |
| 667 | Phenazone | C12H8N2 | |
| 668 | cis-Azobenzene | C12H10N2 | |
| 669 | Diphenyl diazene | C12H10N2 | |
| 670 | 4,4'-Dimethyl-2,2'-bipyridine | C12H12N2 | |
| 671 | 1,(1-Piperidinyl) cyclohexanecarbonitrile | C12H20N2 | |
| 672 | Li(I)(Cp)N2 (SIJNII) (Geo) | H23LiC12N2 | |
| 673 | Li(I)(Cp)N2 (SIJNII) | H23LiC12N2 | |
| 674 | a-Phenyl-1-piperidineacetonitrile | C13H16N2 | |
| 675 | Li(I)N2C5 (FAGCAR) (Geo) | H25LiC14N2 | |
| 676 | Li(I)N2C5 (FAGCAR) | H25LiC14N2 | |
| 677 | 2,2'-Biquinoline | C18H12N2 | |
| 678 | Tetraisobutylsuccinonitrile | C20H36N2 | |
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