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RESEARCH PRODUCT
Heterocyclic systems containing antimony (III) -VIII . Hypervalency by intramolecular 1,5-chelation Sb · · · N in rings RSb [ (CH2) 3] 2NR′ (NR′ = NMe, NBz, NBui) and comparison to analogous compounds of AsIII, BiIII, GeIV and SnIV
Andrea ZickgrafMasashi TakahashiMasuo TakedaEnrico. MocellinMasaki MaedaCarlo MealliMartin DrägerElmar Bräusubject
LigandChemistryStereochemistryChemical shiftHypervalent moleculechemistry.chemical_elementCrystal structureMedicinal chemistryInorganic ChemistryAntimonyIntramolecular forceMaterials ChemistryChelationPhysical and Theoretical ChemistryCyclic voltammetrydescription
Abstract Eleven antimony compounds RSb [ (CH2) 3] 2 NR′ and eight germanium compounds R2Ge [ (CH2) 3] 2 NR′ (some combinations of R = Cl, I, NCS, OSiPh3, Ph, and NR′ = NMe, NBz, NBui) have been synthesized by diGrignard reactions and subsequent treatment with AgSCN, Ph3SiONa or PhLi. The compounds were compared to 14 Sn, 1 As, 5 Sb and 4 Bi analogues taken from the literature. Evidence is provided for 1,5-chelation Sb · · · N via crystal structure determinations (5+1 (lit) Sb compounds) , 13C- and 29Si-NMR chemical shifts, 12;Sb and 12;I Mossbauer data (11 and 3 Sb compounds, respectively) , cyclic voltammetry (9 Sb compounds) and semi-empirical MO calculations on the Extended Huckel level (8 present compounds and 4 models) . The ligand sequence (Cl
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-06-01 | Polyhedron |