Calabrese M, Gomila RM, Pizzi A, Frontera A, Resnati G. Erythronium Bonds: Noncovalent Interactions Involving Group 5 Elements as Electron-Density Acceptors.
Chemistry 2023;
29:e202302176. [PMID:
37518768 DOI:
10.1002/chem.202302176]
[Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/01/2023]
Abstract
Analyses of the Cambridge Structural Database and theoretical calculations (PBE0-D3/def2-TZVP level, atoms-in-molecules, natural bond orbital studies) prove the formation of net attractive noncovalent interactions between group 5 elements and electron-rich atoms (neutral or anionic). These kinds of bonding are markedly different from coordination bonds formed by the same elements and possess the distinctive features of σ-hole interactions. The term erythronium bond is proposed to denote these bonds. X-ray structures of vanadate-dependent bromoperoxidases show that these interactions are present also in biological systems.
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