2012
DOI: 10.1002/ange.201204601
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Weak Arene Stabilization of Bulky Amido‐Germanium(II) and Tin(II) Monocations

Abstract: Sorgfältig abgeschirmt: Germanium(II)‐ und Zinn(II)‐Monokationen, die durch einen sehr sperrigen Amidoliganden und ein sehr schwach koordinierendes Anion stabilisiert sind, werden beschrieben (siehe Bild; E=Ge, Sn; PF=[Al{OC(CF3)3}4]−). Die Metallzentren gehen schwache intramolekulare η2‐Aren‐Wechselwirkungen ein, und erste Reaktivitätsstudien unterstreichen die Elektrophilie der Kationen.

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Cited by 42 publications
(18 citation statements)
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“…This is supported by the 119 Sn chemical shifts observed for the three‐coordinate tin(II) monocation [{HC(MeCNDip) 2 }Sn(OEt 2 )] + ( II , δ ( 119 Sn)=−139.5 ppm), and its congener [{HC(MeCNDip) 2 }Sn] + ( δ ( 119 Sn)=197 ppm, CD 2 Cl 2 ), which exhibit a very similar difference in the 119 Sn chemical shifts of the higher and the lower coordinate species 6c. Notably, the DMAP adduct of III (Figure 1, adduct not shown) resonates at δ ( 119 Sn)=−30 ppm (CD 2 Cl 2 ) 6d…”
Section: Methodsmentioning
confidence: 98%
See 1 more Smart Citation
“…This is supported by the 119 Sn chemical shifts observed for the three‐coordinate tin(II) monocation [{HC(MeCNDip) 2 }Sn(OEt 2 )] + ( II , δ ( 119 Sn)=−139.5 ppm), and its congener [{HC(MeCNDip) 2 }Sn] + ( δ ( 119 Sn)=197 ppm, CD 2 Cl 2 ), which exhibit a very similar difference in the 119 Sn chemical shifts of the higher and the lower coordinate species 6c. Notably, the DMAP adduct of III (Figure 1, adduct not shown) resonates at δ ( 119 Sn)=−30 ppm (CD 2 Cl 2 ) 6d…”
Section: Methodsmentioning
confidence: 98%
“…6c Outstanding is the report by Jones and co‐workers on the amido‐substituted tin(II) monocation III (Figure 1). 6d…”
Section: Methodsmentioning
confidence: 99%
“…The centroid (C10-C15)-Sn1 and centroid (C20-C25)-Sn1 distances are 3.168 (2) and 3.110 (2) Å , respectively. The latter values are longer than the arene Sn interactions of the dicationic tin(II) arene complex (Li et al, 2012). For more reference compounds featuring arene p -block element interactions, refer to a recent review (Schmidbaur and Schier, 2008).…”
mentioning
confidence: 98%
“…An added feature of this ligand class, in which the central aryl‐group Ar* incorporates additional aromatic rings, is the ability to provide secondary (intramolecular) M⋅⋅⋅π‐arene interactions (vide infra). Of particular relevance to this work, Jones and co‐workers demonstrated that ligands of this type ( Me Ar ≠ =2,6‐(CHPh 2 ) 2 –4‐MeC 6 H 2 ) may be used to stabilize electrophilic germanium and tin cations through weak η 2 ‐arene interactions to the flanking phenyl groups ( A , Figure ) …”
Section: Introductionmentioning
confidence: 99%