title: Lewis base mediated autoionization of GeCl2 and SnCl2.
abstract: Cationic and anionic species of heavier low-valent group 14 elements are intriguing targets in main group chemistry due to their synthetic potential and industrial applications. In the present study, we describe the synthesis of cationic (MCl(+)) and anionic (MCl(3)(-)) species of heavier low-valent group 14 elements of germanium(II) and tin(II) by using the substituted Schiff base 2,6-diacetylpyridinebis(2,6-diisopropylanil) as Lewis base (LB). Treatment of LB with 2 equiv of GeCl(2)·dioxane and SnCl(2) in toluene gives compounds [(LB)Ge(II)Cl](+)[Ge(II)Cl(3)](-) (1) and [(LB)Sn(II)Cl](+)[Sn(II)Cl(3)](-) (2), respectively, which possess each a low-valent cation and an anion. Compounds 1 and 2 are well characterized with various spectroscopic methods and single crystal X-ray structural analysis.
authors.affiliation: Institut für Anorganische Chemie, Georg-August-Universität, Tammannstrasse 4, D-37077 Göttingen, Germany.
authors.forename: Amit Pratap
authors.initials: AP
authors.lastname: Singh
authors.forename: Herbert W
authors.initials: HW
authors.lastname: Roesky
authors.forename: Elena
authors.initials: E
authors.lastname: Carl
authors.forename: Dietmar
authors.initials: D
authors.lastname: Stalke
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Demers
authors.forename: Adam
authors.initials: A
authors.lastname: Lange
mesh_terms: D018360:Crystallography, X-Ray; D058115:Lewis Bases / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D009942:Organometallic Compounds / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D058115:Lewis Bases; D009942:Organometallic Compounds; D017971:Tin Compounds; C557680:germanium chloride; C023599:stannous chloride