FK2
Bonds
| First atom | Second atom | Bond order type | Distance (experimental model) | Distance (ideal model) | Properties |
| O1 | C2 | doub | 1.21Å | 1.23Å | |
| C2 | C1 | sing | 1.51Å | 1.53Å | |
| C1 | C | sing | 1.51Å | 1.52Å | |
| O | C | doub | 1.21Å | 1.22Å | |
| C | O2 | sing | 1.34Å | 1.39Å | |
| C1 | H1 | sing | 1.09Å | 1.10Å | |
| C1 | H2 | sing | 1.09Å | 1.10Å | |
| C2 | H3 | sing | 1.08Å | 1.08Å | |
| O2 | H5 | sing | 0.97Å | 0.95Å |
Angles
| First atom | Second atom | Third atom | Angle (experimental model) | Angle (ideal model) |
| O1 | C2 | C1 | 120.9° | 119.9° |
| O1 | C2 | H3 | 119.5° | 120.0° |
| C2 | C1 | C | 115.3° | 109.5° |
| C2 | C1 | H1 | 108.0° | 109.5° |
| C2 | C1 | H2 | 108.0° | 109.5° |
| C1 | C2 | H3 | 119.5° | 120.0° |
| C1 | C | O | 117.4° | 120.0° |
| C1 | C | O2 | 121.8° | 120.0° |
| C | C1 | H1 | 108.0° | 109.5° |
| C | C1 | H2 | 108.0° | 109.5° |
| O | C | O2 | 92.8° | 120.0° |
| C | O2 | H5 | 109.5° | 116.9° |
| H1 | C1 | H2 | 109.5° | 109.5° |
Dihedrals
| First atom | Second atom | Third atom | Fourth atom | Torsion (experimental model) | Torsion (ideal model) |
| O1 | C2 | C1 | H3 | 180.0° | 180.0° |
| O1 | C2 | C1 | C | 120.3° | 125.0° |
| O1 | C2 | C1 | H1 | 118.8° | 115.0° |
| O1 | C2 | C1 | H2 | 0.5° | 5.0° |
| C2 | C1 | C | H1 | 120.9° | 120.0° |
| C2 | C1 | C | H2 | 120.8° | 120.0° |
| C2 | C1 | C | O | 38.0° | 0.0° |
| C2 | C1 | C | O2 | 150.8° | 180.0° |
| C2 | C1 | H1 | H2 | 117.3° | 120.0° |
| C1 | C | O | O2 | 128.4° | 180.0° |
| C | C1 | H1 | H2 | 117.3° | 120.0° |
| C | C1 | C2 | H3 | 59.7° | 55.0° |
| C1 | C | O2 | H5 | 125.0° | 180.0° |
| O | C | C1 | H1 | 82.9° | 120.0° |
| O | C | C1 | H2 | 158.8° | 120.0° |
| O | C | O2 | H5 | 0.0° | 0.0° |
| O2 | C | C1 | H1 | 29.9° | 60.0° |
| O2 | C | C1 | H2 | 88.4° | 60.0° |
| H1 | C1 | C2 | H3 | 61.2° | 65.0° |
| H2 | C1 | C2 | H3 | 179.5° | 175.0° |
