Crown ether alkali metal TCNQ complexes revisited – the impact of smaller cation complexes on their solid-state architecture and properties. Issue 21 (9th May 2019)

• Record Type: Journal Article
• Authors: Yan, Bingjia; Horton, Peter N.; Russell, Andrea E.; Wedge, Christopher J.; Weston, Simon C.; Grossel, Martin C.
• Is Part Of: CrystEngComm. Volume 21:Issue 21(2019)
• Page Start: 3273
• Page End: 3279
• Publication Date: 2019-05-09
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c9ce00234k
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : Water molecules play a key structure-organising role in the crystallisation of 15-crown-5 complexes of lithium and sodium TCNQ in the presence of excess TCNQ 0 . Abstract : The solid-state behaviour of four alkali metal TCNQ complexes: (15-crown-5)LiTCNQ (1 ), (15-crown-5)NaTCNQ (2 ), (15-crown-5)Li(TCNQ)2 ·H2 O (3 ·H 2 O ) and (15-crown-5)Na(TCNQ)2 ·H2 O (4 ·H 2 O ) has been explored by single crystal X-ray diffraction, infrared (IR), Raman and electron paramagnetic resonance (EPR) measurements. The presence of a small cation and ionophore leads to subtle changes in behaviour compared with their larger alkali metal analogues and in the hydrated salts water bridges form links between the crown-encapsulated cations and neighbouring TCNQ stacks.