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Structure and reactivity of cyanocuprates containing the monoanionic C,N-chelating aminoaryl ligand [C6H4CH2NMe2-2]−

✍ Scribed by Claudia M.P. Kronenburg; Johann T.B.H. Jastrzebski; Gerard van Koten

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
83 KB
Volume
19
Category
Article
ISSN
0277-5387

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✦ Synopsis

The 2:1 cyanocuprate [Ar 2 Cu(CN)Li 2 (THF) 4 ] `(1, Ars[C 6 H 4 CH 2 NMe 2 -2] y ) is obtained as the only product in the reaction of two equivalents of ArLi with one equivalent of CuCN in tetrahydrofuran (THF) at y788C. The X-ray crystal structure reveals an ionic polymeric chain consisting of consecutive [Ar 2 Cu] y and [(THF) 2 LiCNLi(THF) 2 ] q units. Its composition in THF solution has been investigated.

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Tuning of tantalum alkylidene reactivity
Tuning of tantalum alkylidene reactivity with a terdentate aryl amine ligand: Synthesis, structure and reactivity of [TaCl2{C6H3(CH2NMe2)2-2,6}(CHBut)]
✍ Hendrikus C. L. Abbenhuis; David M. Grove; Gerard van Koten; Paul van der Sluis; 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 239 KB

## Abstract The terdentate aryldiamine ligand in the aryltantalum(V) alkylidene complex [TaCl~2~{C~6~H~3~(CH~2~NMe~2~)~2~‐2,6}(CHBu^t^)] (1) controls alkylidene reactivity in a range of metal‐mediated Wittig reactions. An X‐ray diffraction study of (1) shows that the hexacoordinate tantalum centre