Stable Monomeric Germanium(II) and Tin(II) Compounds with Terminal Hydrides

Access to Base Adducts of Low‐Valent Organotin‐Hydride Compounds by Controlled, Stepwise Hydrogen Abstraction from a Tetravalent Organotin Trihydride

“…[8] Likely monomeric two-coordinatea midotin(II) hydrides have been studied by Jones and co-workers, [9] Rivard and co-workers described [SnH 2 ]a nd [SnH 2 SiH 2 ]t rapped in donor-acceptor complexes [10] and intramolecular base adducts formed from tin(II) hydrides have been presented by Roeskya nd co-workers. [11] Among other synthetic routes, organotin(IV) and -tin(II) hydrides can be accessedb ym etathesis of the respective halides with suitable hydride sources. In the case of organotin(II) hydrides,t he activation of hydrogen gas by distannynes with tin in the oxidation state Sn I represents afurther fundamental route.…”

Synthesis and reactivity of tin amide complexes

“…The combined extracts were filtered and the resulting orange solution was slowly evaporated in vacuo and stored at À30°C for 24 h yielding 3 (0.095 g, 38%, first crop) as yellow crystals. 1 …”

“…Divalent b-diketiminate group 14 complexes have been the subject of several recent studies, including the synthesis and reactivity of germanium and tin hydrides [1,2], synthesis and reactivity of lead alkoxides [3,4], and the generation of unusual molecules such as a tin hydroxide stabilized by Fe(CO) 4 [5], and germanium and lead phosphides [6,7]. By far the most common b-diketiminate ligand used is [{N(2,6-i Pr 2 C 6 H 3 )C(Me)} 2 CH] À , or BDI.…”

Reactions of some organogermanium(II) chlorides

“…X-ray structure analysis showed that the former is tetrameric while the latter is monomeric in the solid state, thereby demonstrating the Lewis base behavior of 1. Oxidative-addition reaction of 1 with elemental chalcogens (S, Se) gave thermally stable germanethione Ge(S)(PAA)Cl (9) and germaneselone Ge(Se)(PAA)Cl (10) [3] (Scheme 3). Similarly ␤-diketiminato germathioacid chloride and germaselenaacid chloride were prepared by Barrau and co-workers [5] and Roesky and co-workers [4] in the same manner.…”

“…The reactivity of (PAA)GeCl (1). manium(II) hydride compound [(2,6-i Pr 2 C 6 H 3 ) 2 DAP]GeH (13) can be synthesized when AlH 3 ·NMe 3 was used to react with 11a [9] (Scheme 4). The synthesis of germanium(II) hydroxide has also been reported.…”