Dihydrogen bond: Difference between revisions

WP:CHECKWIKI error fixes using AWB
m (WP:CHECKWIKI error fixes using AWB)
| date = 1996-01-01
| pmid = 19904922
}}</ref> In other words, the amine is a protic acid and the borane end is hydridic. The resulting B&minus;H<sup>...</sup>H&minus;N attractions stabilize the molecule as a solid. In contrast, the related substance [[ethane]], H<sub>3</sub>CCH<sub>3</sub>, is a gas with a boiling point 285 &nbsp;°C lower. Because two hydrogen centers are involved, the interaction is termed a dihydrogen bond. Formation of a dihydrogen bond is assumed to precede formation of H<sub>2</sub> from the reaction of a hydride and a protic acid. A very short dihydrogen bond is observed in NaBH<sub>4</sub>·2H<sub>2</sub>O with H&minus;H contacts of 1.79, 1.86, and 1.94 Å.<ref name=ChemRev>{{Cite journal
| doi = 10.1021/cr000021b
| volume = 101
==Coordination chemistry==
[[File:DihydrogenBondingIrCmpx.png|thumb|140 px|Dihydrogen bonding exists between the hydroxypyridine and a hydride ligand in this iridium complex.]] Protonation of transition metal hydride complexes is generally thought to occur via dihydrogen bonding.<ref>Natalia V. Belkova, Elena S. Shubina, and Lina M. Epstein "Diverse World of Unconventional Hydrogen Bonds" <i>''Acc. Chem. Res.</i>'', 2005, 38, 624–631. {{DOI|10.1021/ar040006j}}</ref> This kind of H&minus;H interaction is distinct from the H&minus;H bonding interaction in [[transition metal]] complexes having dihydrogen bound to a metal.<ref>{{Cite book
| edition = 1
| publisher = Springer
| last = Kubas
| first = Gregory J.
| year = 2001
| title = Metal Dihydrogen and -Bond Complexes - Structure, Theory, and Reactivity
| date = 2001-08-31
==In neutral compounds==
| title = Can non-polar hydrogen atoms accept hydrogen bonds?
| journal = Chem. Commun.
| date = 2014
| year = 2014
| pmid = 24145311