Evidence for genuine hydrogen bonding in gold(I) complexes.
Proc Natl Acad Sci U S A
; 116(1): 46-51, 2019 01 02.
Article
em En
| MEDLINE
| ID: mdl-30567973
ABSTRACT
The ability of gold to act as proton acceptor and participate in hydrogen bonding remains an open question. Here, we report the synthesis and characterization of cationic gold(I) complexes featuring ditopic phosphine-ammonium (P,NH+) ligands. In addition to the presence of short AuâââH contacts in the solid state, the presence of AuâââH-N hydrogen bonds was inferred by NMR and IR spectroscopies. The bonding situation was extensively analyzed computationally. All features were consistent with the presence of three-center four-electron attractive interactions combining electrostatic and orbital components. The role of relativistic effects was examined, and the analysis is extended to other recently described gold(I) complexes.
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MEDLINE
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En
Ano de publicação:
2019
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Article