Synthesis of Heavy N‐Heterocyclic Tetrylenes: Influence of Ligand Sterics on Structure. Issue 34 (18th August 2021)

• Record Type: Journal Article
• Authors: Schwamm, Ryan J.; von Randow, Clara A.; Mouchfiq, Ahmed; Evans, Matthew J.; Coles, Martyn P.; Robin Fulton, J.
• Is Part Of: European journal of inorganic chemistry. Issue 34(2021)
• Page Start: 3466
• Page End: 3473
• Publication Date: 2021-08-18
• Subjects: germanium -- Group 14 -- lead -- tetrylene -- tin; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.202100447
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: The synthesis and structural characterisation of [(NON R )M] (NON=O(SiMe2 NR)2 ] 2− ; R= t Bu, Ph, 2, 6‐Me2 C6 H3 (Dmp), 2, 6‐ i Pr2 C6 H3 (Dipp); M=Ge, Sn, Pb) is described. Germanium complexes [(NON Ph )Ge], [(NON Dmp )Ge] and [(NON Dipp )Ge] are monomeric. Tin complexes [(NON Ph )Sn]2, [(NON Dmp )Sn]2 and [(NON t Bu )Sn]2 are dimeric in the solid‐state, with [(NON Ph )Sn]2 forming a link through bridging N‐atoms, [(NON Dmp )Sn]2 linked through Sn⋅⋅⋅Ar contacts and [(NON t Bu )Sn]2 forming the first distannene bearing two amido ligands. In contrast, [(NON Dipp )Sn] is monomeric in the solid‐state. The lead complexes [(NON Ph )Pb]2 and [(NON Dmp )Pb]2 are isostructual with their tin analogues while [(NON t Bu )Pb] is monomeric in the solid‐state. Solution phase NMR spectroscopic data suggest that all [(NON R )M] compounds are monomeric in solution. Structural parameters, including buried volume (%Vbur ) are discussed. Abstract : A series of two‐coordinate N ‐heterocyclic heavy tetrylenes is reported. The solid‐state structure of [(NON R )M] (NON=O(SiMe2 NR)2 ] 2− ; R= t Bu, Ph, Dmp, Dipp); M=Ge, Sn, Pb) is dependent on the R and M group, with many of these complexes forming dimers in the solid‐state