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Synthesis and Systematic Structural Analysis of Cationic Half‐Sandwich Ruthenium Chalcogenocarbonyl Complexes
Author(s) -
Suzuki Ayumi,
Mutoh Yuichiro,
Tsuchida Noriko,
Fung ChiWai,
Kikkawa Shoko,
Azumaya Isao,
Saito Shinichi
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201904600
Subject(s) - imes , cationic polymerization , ruthenium , chemistry , transition metal , metal , stereochemistry , medicinal chemistry , crystallography , polymer chemistry , organic chemistry , carbene , catalysis
Abstract Although the chemistry of transition‐metal complexes with carbonyl (CO) and thiocarbonyl (CS) ligands has been well developed, their heavier analogues, namely selenocarbonyl (CSe) and tellurocarbonyl (CTe) complexes remain scarce. The limited availability of such CSe and CTe complexes has so far hampered our understanding of the differences between such chalcogenocarbonyl (CE: E=O, S, Se, Te) ligands. Herein, we report the synthesis and properties of a series of cationic half‐sandwich ruthenium CE complexes of the type [CpRu(CE)(H 2 IMes)(CNCH 2 Ts)][BAr F 4 ] (Cp=η 5 ‐C 5 H 5 − ; H 2 IMes=1,3‐dimesitylimidazolin‐2‐ylidene; Ar F =3,5‐(CF 3 ) 2 C 6 H 3 ). A combination of X‐ray diffraction analyses, NMR spectroscopic analyses, and DFT calculations revealed an increasing π‐accepting ability of the CE ligands in the order O