MeSi(CH2SnRO)3 (R=Ph, Me3SiCH2): Building Blocks for Triangular‐Shaped Diorganotin Oxide Macrocycles. Issue 52 (19th October 2020)

• Record Type: Journal Article
• Authors: Ayari, Jihed; Göb, Christian R.; Oppel, Iris M.; Lutter, Michael; Hiller, Wolf; Jurkschat, Klaus
• Is Part Of: Angewandte Chemie international edition. Volume 59:Issue 52(2020)
• Page Start: 23892
• Page End: 23898
• Publication Date: 2020-10-19
• Subjects: DOSY NMR spectroscopy -- electrospray-ionization mass spectrometry -- macrocycles -- organotin oxides -- X-ray crystallography; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202012248
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The syntheses of the novel silicon‐bridged tris (tetraorganotin) compounds MeSi(CH2 SnPh2 R)3 (2, R=Ph; 5, R=Me3 SiCH2 ) and their halogen‐substituted derivatives MeSi(CH2 SnPh(3− n ) I n )3 (3, n =1; 4, n =2) and MeSi(CH2 SnI2 R)3 (6, R=Me3 SiCH2 ) are reported. The reaction of compound 4 with di‐ t ‐butyltin oxide ( t ‐Bu2 SnO)3 gives the oktokaideka‐nuclear (18‐nuclear) molecular diorganotin oxide [MeSi(CH2 SnPhO)3 ]6 (7 ) while the reaction of 6 with sodium hydroxide, NaOH, provides the trikonta‐nuclear (30‐nuclear) molecular diorganotin oxide [MeSi(CH2 SnRO)3 ]10 (8, R=Me3 SiCH2 ). Both 7 and 8 show belt‐like ladder‐type macrocyclic structures and are by far the biggest molecular diorganotin oxides reported to date. The compounds have been characterized by elemental analyses, electrospray mass spectrometry (ESI‐MS), NMR spectroscopy, 1 H DOSY NMR spectroscopy (7 ), IR spectroscopy (7, 8 ), and single‐crystal X‐ray diffraction analysis (2, 7, 8 ). Abstract : The first representatives of a new generation of large molecular diorganotin oxides showing Reuleaux triangle‐shaped (7 ) and heart‐formed (8 ) structures are reported. Based on simple syntheses of a great variety of precursor molecules, the concept holds enormous potential for future work in supramolecular chemistry involving main‐group elements and beyond.