|   | 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 | |||
| HCl+ | hydrogen chloride cation | rHCl | 1.315 | 1.581 | 0.267 | 
| ClF5 | chlorinepentafluoride | rFCl | 1.650 | 1.548 | -0.102 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.040 | 2.282 | 0.242 | 
| Al2Cl6 | Aluminum, di-μ-chlorotetrachlorodi- | rAlCl | 2.240 | 2.079 | -0.161 | 
| HSSSH | trisulfane | rHS | 1.344 | 2.050 | 0.707 | 
| S4 | Sulfur tetramer | rSS | 2.155 | 1.957 | -0.198 |