|   | Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology | 
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| Species | Name | Bond type | Bond Length (Å) | ||
|---|---|---|---|---|---|
| Experimental | Calculated | Difference | |||
| C4H6 | 1-Methylcyclopropene | rCH | 1.085 | 4.212 | 3.127 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 3.414 | 2.327 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.476 | 2.258 | 0.782 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 1.831 | 0.744 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.782 | 0.684 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.762 | 0.664 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.070 | 1.504 | 0.434 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.515 | 1.095 | -0.420 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.300 | 1.504 | 0.204 | 
| Ar2 | Argon diatomic | rArAr | 3.758 | 4.047 | 0.289 |