Journal
COORDINATION CHEMISTRY REVIEWS
Volume 418, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2020.213381
Keywords
Noncovalent interactions; Pnictogen bonding; Coordination compounds; Synthesis
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Funding
- Fundacao para a Ciencia e Tecnologia (FCT) of Centro de Quimica Estrutural [UIDB/00100/2020]
- FCT [IST-ID/85/2018]
- Instituto Superior Tecnico (Portugal) [IST-ID/110/2018]
- Baku State University, Azerbaijan
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The pnictogen bond (PnB) is a noncovalent attraction between electrophilic pnictogen atoms, originated from the anisotropic distribution of electron density on Pn in a molecular entity, and a nucleophilic (Nu) region in the same (intramolecular) or another (intermolecular) molecular entity: R-Pn...Nu (Pn = N, P, As, Sb or Bi; R = electron withdrawing atom or group; Nu = Ha, Ch, Pn, pi-system, anion, etc.). Like the halogen and chalcogen bonds, PnB is a directional noncovalent interaction with a preference for a linear geometry, R-Pn...Nu angle approaching 180 degrees. In contrast to the halogen and chalcogen atoms, the pnictogen atoms are able to introduce three electrophilic centres on the Pn atom (on account of the existence of three species bonded to the pnictogen atom), which gives an additional advantage in the use of these weak forces in coordination chemistry. In this review we highlight several recent relevant examples, based on X-ray crystal structure analyses, in which PnB is used as a synthon in the construction and design of coordination and organometallic compounds. (C) 2020 Elsevier B.V. All rights reserved.
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