In:
Zeitschrift für anorganische und allgemeine Chemie, Wiley, Vol. 646, No. 15 ( 2020-08-14), p. 1274-1280
Abstract:
A series of three neutral, hexacoordinate tin(IV) complexes were synthesized by the reaction of 4,4'‐dimethyl‐2,2'‐bipyridine (DMB) with SnX 4 , X = Cl, Br, and I, as starting materials. The complexes (DMB)SnX 4 were characterized in solution by 1 H, 13 C, and 119 Sn NMR spectroscopy, and in the solid‐state by 119 Sn MAS NMR spectroscopy. In addition, single‐crystal X‐ray diffraction and elemental analysis were used to confirm the molecular structures. In these complexes, the tin atom adopts a distorted octahedral arrangement and the DMB acts as a bidentate N,N '‐chelate ligand. Computational DFT methods were also employed to gain more insight into the nature of the bonding in these complexes, including the hypothetical complexes (DMB)SnX 4 (X = F, At). Additionally, the validity and reliability of the 119 Sn NMR chemical shifts were examined. The calculated values were compared with the experimental signals and the effects of structure and solvent are discussed. Finally, all of the complexes (DMB)SnX 4 were successfully tested for the ring‐opening polymerization (ROP) of bulk ε‐caprolactone under non‐dried and aerobic conditions as precatalyst.
Type of Medium:
Online Resource
ISSN:
0044-2313
,
1521-3749
DOI:
10.1002/zaac.v646.15
DOI:
10.1002/zaac.202000073
Language:
English
Publisher:
Wiley
Publication Date:
2020
detail.hit.zdb_id:
201094-X
detail.hit.zdb_id:
1481139-X
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