期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 17, 期 12, 页码 3364-3369出版社
WILEY-BLACKWELL
DOI: 10.1002/chem.201003493
关键词
alkali metals; benzyl anion; coordination isomerism; monomer; polyamines
资金
- UK Engineering and Physical Science Research Council [EP/F063733/1]
- Royal Society/Wolfson Foundation
- European Commission [PIEF-2009-235173]
- EPSRC [EP/F063733/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F063733/1] Funding Source: researchfish
Tetraamine Me(6)TREN has been used as a scaffold support to provide coordinative saturation in the complexes PhCH(2)M center dot Me(6)TREN (M = Li, Na, K). The Li derivative displays a Li-C sigma interaction with a pyramidalized CH(2) both in the solid state and in solution, and represents the first example of eta(4) coordination of Me(6)TREN to lithium. In the sodium derivative, the metal cation slips slightly towards the delocalized pi electrons whilst maintaining a partial sigma interaction with the CH(2) group. For the potassium case, coordinative saturation successfully yields the first monomeric benzylpotassium complex, in which the anion binds to the metal cation exclusively through its delocalized pi system resulting in a planar CH(2) group.
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