Different Chemical Environments of [GeSe] in the Li Compounds [Li(HO)][GeSe]·4.33HO, [{Li(thf)}GeSe], and [Li(HO)][MnGeSe], and Ionic Conductivity of Underlying "LiGeSe".

The crystalline selenido germanates [Li(HO)][GeSe]·4.3HO (), [{Li(thf)}GeSe] (), and [Li(HO)][MnGeSe] () (thf = THF = tetrahydrofuran) were obtained by an extraction of a glassy ternary phase of the nominal composition LiGeSe (=LiS·2GeSe) with water () or THF () and slow evaporation of the solvent or by being layered with MnBr in HO/MeOH (), respectively. The compounds contain known selenido germanate anions, however, for the first time with Li counterions.

Intermediate spin ground state of an isosceles triangular [Mn(II)(3)] complex.

[{Mn(tmeda)}(3){GeSe(3)(OMe)}(2)] (), synthesized by the reaction of [K(4)(H(2)O)(3)][Ge(2)Se(6)] with MnCl(2).4H(2)O in MeOH-tmeda (tmeda = N,N,N',N'-tetramethyl-1,2-diaminoethane), exhibits an isosceles triangular arrangement of Mn(2+) ions that are antiferromagnetically coupled with an S = 3/2 ground state.

Inorganic frameworks from selenidotetrelate anions [T2Se6]4- (T = Ge, Sn): synthesis, structures, and ionic conductivity of [K2(H2O)3][MnGe4Se10] and (NMe4)2[MSn4Se10] (M = Mn, Fe).

Syntheses, structures, and physical properties of three inorganic framework compounds [K(2)(H(2)O)(3)][MnGe(4)Se(10)] (1), (NMe(4))(2)[MnSn(4)Se(10)] (2), and (NMe(4))(2)[FeSn(4)Se(10)] (3) are presented. The title compounds are based on a prominent open framework anionic structure; in these cases, however, they contain K(+), the smallest type of counterion to be included so far (1), or represent Sn analogues (2, 3). Both changes with respect to related compounds are reflected in peculiar physical properties, such as ion conductivity or relatively small band gaps.

The reactions of dialkylgallium hydrides with tert-butylethynylbenzenes--a systematic investigation into the course of hydrogallation reactions.

The reactions of bis- and tris(tert-butylethynyl)benzenes with dialkylgallium hydrides afforded two different types of products. 1,4-Di(tert-butylethynyl)benzene and dialkylgallium hydrides R(2)GaH bearing relatively small substituents (R = Et, nPr) gave the expected addition products with each C triple bond C triple bond inserted into a Ga-H bond. The intact GaR(2) groups are attached to those carbon atoms which are in alpha-position to the benzene rings, and intermolecular Ga-C interactions led to the formation of one-dimensional coordination polymers.