Table 2. Comparison of structural parameters in (I) and (II) .
| 4-Fluoro-β-D-Glcp, (I) | β-D-Glcp, (II) | |
|---|---|---|
| Bond lengths (Å) | ||
| C1—C2 | 1.5208 (18) | 1.511 (4) |
| C2—C3 | 1.5286 (19) | 1.513 (4) |
| C3—C4 | 1.5158 (19) | 1.531 (4) |
| C4—C5 | 1.5348 (18) | 1.519 (4) |
| C5—C6 | 1.515 (2) | 1.513 (4) |
| C1—O1 | 1.3682 (17) | 1.394 (4) |
| C1—O5 | 1.4415 (16) | 1.431 (3) |
| C2—O2 | 1.4228 (16) | 1.429 (3) |
| C3—O3 | 1.4272 (16) | 1.427 (3) |
| C4—F/O4 | 1.4019 (16) | 1.422 (3) |
| C5—O5 | 1.4285 (17) | 1.439 (3) |
| C6—O6 | 1.4286 (19) | 1.424 (4) |
| Bond angles (°) | ||
| C1—C2—C3 | 111.63 (11) | 113.1 (2) |
| C2—C3—C4 | 110.13 (11) | 109.8 (2) |
| C3—C4—C5 | 111.98 (12) | 109.5 (2) |
| C4—C5—O5 | 108.32 (11) | 108.3 (2) |
| C5—O5—C1 | 112.60 (10) | 112.0 (2) |
| O5—C1—C2 | 107.84 (11) | 109.3 (2) |
| C4—C5—C6 | 113.09 (12) | 115.0 (2) |
| Torsion angles (°) | ||
| C1—C2—C3—C4 | −50.81 (14) | −49.7 (3) |
| C1—O5—C5—C4 | 64.47 (14) | 66.5 (3) |
| C2—C3—C4—C5 | 49.68 (14) | 52.6 (3) |
| C2—C1—O5—C5 | −65.54 (13) | −61.9 (3) |
| C3—C4—C5—O5 | −55.55 (14) | −60.5 (3) |
| C3—C2—C1—O5 | 57.15 (14) | 53.2 (3) |
| C3—C4—C5—C6 | −174.82 (12) | −179.8 (3) |
| O5—C5—C6—O6 | −59.56 (15) (gg)† | −60.4 (3) (gg)† |
gg is gauche–gauche.