A new supramolecular bonding motif involving NH bonds of ammonium salts and macrocycles derived from platinum corners and butadiynediyl linkers

Brenna K Collins; Nattamai Bhuvanesh; John A Gladysz

doi:10.1039/d2dt02680e

A new supramolecular bonding motif involving NH bonds of ammonium salts and macrocycles derived from platinum corners and butadiynediyl linkers

Dalton Trans. 2022 Nov 15;51(44):16795-16799. doi: 10.1039/d2dt02680e.

Authors

Brenna K Collins¹, Nattamai Bhuvanesh¹, John A Gladysz¹

Affiliation

¹ Department of Chemistry, Texas A&M University, PO Box 30012, College Station, Texas 77842-3012, USA. gladysz@mail.chem.tamu.edu.

PMID: 36269068
DOI: 10.1039/d2dt02680e

Abstract

CuI catalyzes reactions of cis-(R₂C(CH₂PPh₂)₂)Pt(CCCCH)₂ and cis-(R₂C(CH₂PPh₂)₂)PtI₂ in secondary amine solvents HNR'₂ to give the title adducts [(R₂C(CH₂PPh₂)₂)Pt(CCCC)]₄·(H₂NR'₂⁺I^-)_n (R/R'/n = Me/Et/1, Me/((CH₂CH₂)₂O)_0.5/3, Et/Et/1, Et/CH₂CHCH₂/1; 92-42%). Crystal structures of these or closely related species establish folded Pt₄ cores containing ammonium cation guests, with NH/ and NCH/CC hydrogen bonding. DOSY NMR experiments show that the host/guest relationship can be maintained in solution.