Interaction of In(I) and Tl(I) cations with 2,6-diaryl pyridine ligands: cation encapsulation within a very weakly interacting N/arene host environment.
Interaction of In(I) and Tl(I) cations with 2,6-diaryl pyridine ligands: cation encapsulation within a very weakly interacting N/arene host environment.
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In(I) 和 Tl(I) 阳离子与 2,6-二芳基吡啶配体的相互作用:阳离子封装在相互作用非常弱的 N/芳烃主体环境中。
DOI:
10.1021/ic3021386
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发表时间:
2012
影响因子:
4.6
通讯作者:
Mansaray HB
中科院分区:
文献类型:
--
作者:
Mansaray HB
The interaction of 2,6-dimesitylpyridine with Tl(I) and In(I) cations has been investigated with a view to developing tractable molecular M(I) compounds which are soluble in organic media. In stark contrast to isosteric and isoelectronic terphenyl systems, complexes featuring the [(2,6-Mes2py)M]+fragment feature very weak metal–ligand interactions in the solid state, as revealed by M-N distances of the order of 2.45 Å (M = In) and 2.64 Å (M = Tl). While additional weak π interactions are observed with arene solvate molecules in these systems, the related 2:1 complex [(2,6-Mes2py)2In][BArf4] features an In(I) center wholly encapsulated by the bulky Mes2py donors, and even longer In–N distances [2.586(6) and 2.662(5) Å]. These contacts are about 0.5 Å greater than the sum of the respective covalent radii (2.13 Å) and provide evidence for an effectively “naked” In(I) cation stabilized to a minor extent by orbital interactions.
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