|   | 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 | 4.187 | 3.102 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 3.398 | 2.311 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.476 | 2.244 | 0.768 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.087 | 1.818 | 0.731 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.767 | 0.669 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.098 | 1.751 | 0.653 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.515 | 1.084 | -0.431 | 
| C4H6 | 1-Methylcyclopropene | rCH | 1.070 | 1.499 | 0.429 | 
| C4H6 | 1-Methylcyclopropene | rCC | 1.300 | 1.502 | 0.202 | 
| NaH | sodium hydride | rNaH | 1.887 | 1.762 | -0.124 | 
| Ar2 | Argon diatomic | rArAr | 3.758 | 3.985 | 0.227 | 
| Be2 | Beryllium diatomic | rBeBe | 2.460 | 2.620 | 0.160 | 
| S4 | Sulfur tetramer | rSS | 2.155 | 2.047 | -0.108 | 
| AlP | Aluminum monophosphide | rAlP | 2.400 | 2.187 | -0.213 | 
| AlP | Aluminum monophosphide | rAlP | 2.220 | 2.056 | -0.164 | 
| Na2 | Sodium diatomic | rNaNa | 3.079 | 2.965 | -0.114 | 
| Mg2 | Magnesium diatomic | rMgMg | 3.891 | 4.142 | 0.252 |