The synthesis and structure of sterically encumbered terphenyl tin(II) halide derivatives: simultaneous existence of monomers and dimers in the crystalline phase

Synthesis and Reactivity of Low‐Valent Group 14 Element Compounds

“…A byproduct‐free synthesis of 3 and 4 is achieved, if the corresponding group 14 starting material is already in the oxidation state +2. Thus, Ph* E Cl ( E = Sn 25, Ge) was treated with LiP(SiMe 3 ) 2 ·1.8THF in n ‐hexane at low temperature. According to the 31 P NMR spectra of the reaction mixtures only Ph*SnP(SiMe 3 ) 2 ( 3 ) ( δ ( 31 P) = –123.1) and Ph*GeP(SiMe 3 ) 2 ( 4 ) ( δ ( 31 P) = –48.5), respectively, are detected as the main phosphorus‐containing products along with traces of HP(SiMe 3 ) 2 ( δ ( 31 P) = –236.3), resulting from hydrolysis of LiP(SiMe 3 ) 2 [Equation (3)].…”

“…NMR spectra were recorded with either a Bruker AMX 300 or Bruker Avance 400 spectrometer with δ referenced to external SiMe 4 ( 1 H, 13 C), H 3 PO 4 ( 31 P), or SnMe 4 ( 119 Sn). The substances LiP(SiMe 3 ) 2 ·1.8THF 45, Ph*I 46, Ph*Li·OEt 2 46, Ph*GeCl 47, and Ph*SnCl 48 were prepared according to literature methods. Due to the sensibility of the compounds and, in some cases, the lack of material no elemental analyses of 2 – 10 could be performed.…”

Reductive Elimination and Oxidative Addition of Hydrogen at Organostannylium and Organogermylium Cations

“…[D 8 ]THF was distilled from LiAlD 4 and stored in a dry box. Terphenyl‐ iodide (Ar*I) ‐lithium derivative (Ar*Li(OEt 2 )),‐Sn II chloride (Ar*SnCl, Ar*GeCl), were prepared according to modified literature procedures and Sn IV trichloride (Ar*SnCl 3 ), Sn IV hydride, deuteride were prepared as previously described ,. (Ar*GeCl 3 ) was prepared according to a modified literature procedure .…”

A novel tin (II) dithioether complex

“…The bond length for the terminal chloride (2.467(2) Å ) is comparable to that found in tin (IV) chloride thioether complexes, while the length of the bridging Cl-Sn bond is, of course, slightly longer (2.759(2) Å ). Although halide bridging is a motif not seen in similar tin (IV) thioethers, it has been found in other tin (II) [11] and tin (IV) [12] compounds. The square pyramidal geometry also appears to be new to tinthioether chemistry, but not to tin chemistry in general [13].…”