6713-82-2

Upstream product

• 931-50-0 cyclohexylmagnesium bromide 
• 100162-42-3 (C₆H₁₁)3PbLi 
• 104026-67-7 (C₆H₄CH₃)3PbCl 
• 7758-95-4 lead(II) chloride 
• 108-85-0 1-bromocyclohexane 

Downstream Products

• 7570-92-5 cyclohexyl phenyl sulphide 
• 56950-05-1 cyclohexyl phenyl telluride 
• 22233-91-6 phenylselenocyclohexane 
• 100162-43-4 tricyclohexylplumbyl-tricyclohexylstannane 
• 104026-66-6 (cyclohexyl)3PbBr 
• 200060-23-7 tricyclohexyl lead ⁽¹⁺⁾; iodide 

Relevant academic research and scientific papers

Clarification on the reactivity of diaryl diselenides toward hexacyclohexyldilead under light

In this study, the reactivity of organochalcogen compounds toward a representative alkyl-lead bond compound under light was investigated in detail. Under light irradiation, the Cy-Pb bond of Cy6 Pb2 (Cy = cyclohexyl) undergoes homolytic cleavage to generate a cyclohexyl radical (Cy?). This radical can be successfully captured by diphenyl diselenide, which exhibits excellent carbon-radical-capturing ability. In the case of (PhS)2 and (PhTe)2, the yields of the corresponding cyclohexyl sulfides and tellurides were lower than that of (PhSe)2. This probably occurred due to the low carbon-radical-capturing ability of (PhS)2 and the high photosensitivity of the cyclohexyl-tellurium bond.

On Mixed Group IVb - Group IVb Bonds, II. Hexacyclohexylethane Analogues Pb2(c-Hex)6, (c-Hex)3Pb-Sn(c-Hex)3, and Sn2(c-Hex)6

(c-Hex)3Pb-Sn(c-Hex)3 is synthesized from (c-Hex)3PbLi and (c-Hex)3SnCl at -50 deg C in THF.The three title compounds are isomorphous.The compounds have been investigated by mass, NMR and vibrational spectra.Pb2(c-Hex)6: highest fragment Pb2(c-Hex)5(+), 1J(13C-(207)Pb) 30.2 Hz, 2J(13C-(207)Pb) 9.1 Hz, δ((207)Pb) +81 ppm. (c-Hex)3Pb-Sn(c-Hex)3: highest fragment PbSn(c-Hex)5(+), δ((207)Pb) -92 ppm, δ((119)Sn) -157 ppm, 1J((207)Pb-(119)Sn) 2217 Hz.Sn2(c-Hex)6: parent peak Sn2(c-Hex)6, 1J(13C-(119)Sn 113.3 Hz, 2J(13C-(119)Sn) 26.4 Hz, δ((119)Sn) -71 ppm, 1J((119)Sn-(119)Sn) 1258 Hz, ν(Sn-Sn) 135 cm-1.The crystal structure of Pb2(c-Hex)6 has been determined and refined to R=0.044.The symmetry of the molecule is C3; distances Pb-Pb 287.6(4), Pb-C 226(2) and 228(3) pm.The cyclohexyl groups are unusual flat and distorted from the normal Cs symmetry; this is in accordance with two sets of 13C NMR signals in benzene-d6. - Key words: Lead, Tin, Metal-Metal Bond

UEBER POLYPLUMBANE. I. ASYMMETRISCH SUBSTITUIERTE DIPLUMBANE

Diplumbanes Pb2R3R'3 (R,R'=Ph, o-Tol, p-Tol) have been synthesized from R3PbLi and R'PbCl at -60 deg C in THF.Mass, 13C and 207Pb NMR spectra of the products exhibit migrations of R, R' in the transition state (R3PbLi + ClPbR'3) leading to a complex distribution of the substituents (δ(207Pb) with respect to PbMe4 -70 to -95 ppm).The Pb-Pb stretching vibration (100 to 115 cm-1) couples with a lattice vibration giving rise to a single intensive Raman line.The crystal structure of Pb2Ph3(p-Tol)3 has been determined and refined to R=0.155.Two independent molecules are disordered and have identical distribution of the substituents Ph(p-Tol)2Pb-PbPh2(p-Tol) (distances Pb-Pb 283(2) and 286(1) pm).Products Pb2Ph3(OAc)3 with a Pb-Pb bond, already discussed in the literature, could not be verified.