1529-48-2Relevant articles and documents
Organometallic compounds of the lanthanides. 64. Synthesis and X-ray crystal structures of dimethylgermyl bis(tetramethylcyclopentadienyl) halide and alkyl derivatives of the lanthanides
Schumann, Herbert,Esser, Lothar,Loebel, J?rg,Dietrich, Andreas,Van Der Helm, Dick,Ji, Xinhua
, p. 2585 - 2592 (1991)
Metathesis of Me2GeCl2 or Me2SnCl2 with 2 equiv of LiC5Me4H affords Me2Ge(C5Me4H)2 (1) and Me2Sn(C5Me4H)2 (2), respectively. The subsequent deprotonation of 1 with MeLi yields only the desired dilithium salt Me2Ge(C5Me4Li)2 (3) whereas 2 forms Me4Sn and two LiC5Me4H. The trichlorides of neodymium, samarium, holmium, and lutetium react with the dilithium salt 3 with the formation of Me2Ge(C5Me4)2LnCl 2Li(THF)2 (Ln = Nd (4), Sm (5), Ho (6), Lu (7)). The reaction of 4 and 6 with LiCH(SiMe3)2 produces Me2Ge(C5Me4)2LnCH(SiMe 3)2 (Ln = Nd (8), Ho (9)). The new compounds have been characterized by elemental analysis, mass and NMR spectra, as well as X-ray structural analysis of 5, 7, and 9. The halides 5 and 7 crystallize in the monoclinic space group P21/c (No. 14) with a = 9.7284 (9), b = 19.397 (1), c = 16.610 (2) ?, β = 98.963 (9)°; Z = 4 or a = 9.578 (3), b = 19.218 (4), c = 16.525 (4) ?, β = 99.73 (2)°; Z = 4, respectively. Least-squares refinement led to a final R value of 0.020 (Fo > 4σ(Fo)) for 5554 independent reflections for 5 or of 0.028 (Fo > 3σ(Fo)) for 5822 independent reflections for 7. Compound 9 crystallizes in the monoclinic space group P21/m (No. 11) with a = 9.2621 (8), b = 14.216 (2), c = 11.839 (2) ?, β = 107.79 (1)°, Z = 2, and R = 0.023 (Fo > 4σ(Fo)) for 2954 reflections. The structure of 9 shows a short Ho-C (methyl) contact of 2.774 (4) ?.
Molecular Oligogermanes and Related Compounds: Structure, Optical and Semiconductor Properties
Zaitsev, Kirill V.,Tafeenko, Viktor A.,Oprunenko, Yuri F.,Kharcheva, Anastasia V.,Zhanabil, Zhaisan,Suleimen, Yerlan,Lam, Kevin,Zaitsev, Vladimir B.,Zaitseva, Anna V.,Zaitseva, Galina S.,Karlov, Sergey S.
, p. 1240 - 1249 (2017)
The optical (UV/Vis absorbance, fluorescence in the solid state and in solution) and semiconducting properties of a number of di- and trigermanes as well as related silicon- and tin-containing germanes, 1–6 ((p-Tol)3GeGeMe3 (1), Ph3SnGe(SiMe3)3 (2), (C6F5)3GeGePh3 (3), (p-Tol)3GeSiMe2SiMe3 (4), (p-Tol)3GeGeMe2Ge(p-Tol)3 (5), (p-Tol)3GeSiMe2SiMe2Ge(p-Tol)3 (6)) were investigated. Molecular structures of 5 and 6 were studied by X-ray diffraction analysis. All compounds displayed luminescence properties. In addition, a band gap (of about 3.3 eV) was measured for compounds 1–6 showing that those molecules display semiconductor properties.
Transient and Matrix Ultraviolet Absorption Spectra of Dimethylgermylene (Dimethylgermanediyl)
Tomoda, Shuji,Shimoda, Masakatsu,Takeuchi, Yoshito,Kajii, Yoshizumi,Obi, Kinichi,et al.
, p. 910 - 912 (1988)
Dimethylgermylene (1), generated from a new precursor dimethylbis(phenylseleno)germane (2), has been observed as a transient species by time-resolved laser flash photolysis at room temperature.
Wieber et al.
, p. 79,81, 82 (1967)
Belij et al.
, p. 485 (1969)
Fast kinetic studies of the reactivities of transient germylenes in methanol and tetrahydrofuran solution
Lollmahomed, Farahnaz,Huck, Lawrence A.,Harrington, Cameron R.,Chitnis, Saurabh S.,Leigh, William J.
, p. 1484 - 1494 (2009/07/18)
Laser flash photolysis techniques have been employed to study the reactivities of dimethylgermylene (GeMe2), diphenylgermylene (GePh2), and a series of ring-substituted diarylgermylenes (GeAr 2) in methanol (MeOH) and tetr
Studies of photochemical reactions of 7,8-digermabicyclo[2.2.2]octadienes by steady-state and laser flash photolysis techniques
Mochida, Kunio,Kayamori, Takanari,Wakasa, Masanobu,Hayashi, Hisaharu,Egorov, Mikhail P.
, p. 3379 - 3386 (2008/10/08)
The photochemistry of 1,4-diphenyl-2,3-benzo-7,7,8,8-tetraalkyl-7, 8-digermabicyclo[2.2.2]-octadienes in solution has been studied in detail by steady-state, nanosecond laser flash photolysis, and matrix isolation techniques. Photolysis of 7,8-digermabicy
