Stabilität der Oxidationsstufe +4 in Verbindungen der Gruppe 14 von Kohlenstoff bis zum Element 114

The lithium bis(imino)stannylenoid (NIPr) 2 Sn-(Li)Cl (1;N IPr = bis(2,6-diisopropylphenyl)imidazolin-2-imino) was prepared by the reaction of LiNIPr with 0.5 equiv of SnCl 2 ·diox( diox = 1,4-dioxane) and the ambiphilic character of the compound was demonstrated by investigations into its reactivity.T reatment of 1 with I 2 or MeI yielded the oxidative addition products (NIPr) 2 SnI 2 and (NIPr) 2 Sn(Me)I, respectively.I nc ontrast, the reaction of 1 with one equivalent of Me 3 SiCl resulted in the formation of Me 3 SiNIPr and the chlorostannylene dimer [NIPrSnCl] 2 . Moreover,t he substitution reaction of compound 1 with MeLi led to the formation of the methyl-substituted stannate (NIPr) 2 Sn(Li)Me.

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A Tin Analogue of Carbenoid: Isolation and Reactivity of a Lithium Bis(imidazolin‐2‐imino)stannylenoid

Ochiai

Franz

et al. 2016

Angewandte Chemie

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A Tin Analogue of Carbenoid: Isolation and Reactivity of a Lithium Bis(imidazolin‐2‐imino)stannylenoid

Ochiai

Franz

et al. 2016

Angew Chem Int Ed

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The lithium bis(imino)stannylenoid (NIPr)2 Sn(Li)Cl (1; NIPr=bis(2,6-diisopropylphenyl)imidazolin-2-imino) was prepared by the reaction of LiNIPr with 0.5 equiv of SnCl2 ⋅diox (diox=1,4-dioxane) and the ambiphilic character of the compound was demonstrated by investigations into its reactivity. Treatment of 1 with I2 or MeI yielded the oxidative addition products (NIPr)2 SnI2 and (NIPr)2 Sn(Me)I, respectively. In contrast, the reaction of 1 with one equivalent of Me3 SiCl resulted in the formation of Me3 SiNIPr and the chlorostannylene dimer [NIPrSnCl]2 . Moreover, the substitution reaction of compound 1 with MeLi led to the formation of the methyl-substituted stannate (NIPr)2 Sn(Li)Me.

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Molecular Single‐Bond Covalent Radii for Elements 1–118

Pyykkö

Atsumi

2008

Chemistry A European J

1,982

249

1,737

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A self-consistent system of additive covalent radii, R(AB)=r(A) + r(B), is set up for the entire periodic table, Groups 1-18, Z=1-118. The primary bond lengths, R, are taken from experimental or theoretical data corresponding to chosen group valencies. All r(E) values are obtained from the same fit. Both E-E, E-H, and E-CH(3) data are incorporated for most elements, E. Many E-E' data inside the same group are included. For the late main groups, the system is close to that of Pauling. For other elements it is close to the methyl-based one of Suresh and Koga [J. Phys. Chem. A 2001, 105, 5940] and its predecessors. For the diatomic alkalis MM' and halides XX', separate fits give a very high accuracy. These primary data are then absorbed with the rest. The most notable exclusion are the transition-metal halides and chalcogenides which are regarded as partial multiple bonds. Other anomalies include H(2) and F(2). The standard deviation for the 410 included data points is 2.8 pm.

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Stabilität der Oxidationsstufe +4 in Verbindungen der Gruppe 14 von Kohlenstoff bis zum Element 114

Cited by 5 publications

References 27 publications

A Tin Analogue of Carbenoid: Isolation and Reactivity of a Lithium Bis(imidazolin‐2‐imino)stannylenoid

A Tin Analogue of Carbenoid: Isolation and Reactivity of a Lithium Bis(imidazolin‐2‐imino)stannylenoid

A Tin Analogue of Carbenoid: Isolation and Reactivity of a Lithium Bis(imidazolin‐2‐imino)stannylenoid

Molecular Single‐Bond Covalent Radii for Elements 1–118

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