2816-43-5Relevant articles and documents
Donor-acceptor molecular oligogermanes: Novel properties and structural aspects
Zaitsev, Kirill V.,Kharcheva, Anastasia V.,Lam, Kevin,Zhanabil, Zhaisan,Issabayeva, Guldana,Oprunenko, Yuri F.,Churakov, Andrei V.,Zaitseva, Galina S.,Karlov, Sergey S.
, p. 228 - 237 (2018)
The linear oligogermyl amide 2, Ph3GeGeMe2NMe2, was obtained by reacting Ph3GeLi with 1, Me2Ge(Cl)NMe2. The amide 2 was used for the synthesis of molecular oligogermanes 3, Ph3GeGeMe2Ge(C6F5)3, and 4, [Ph3GeGeMe2]2Ge(C6F5)2, containing electron donor (Me, Ph) and acceptor (C6F5) groups, by using a hydrogermolysis reaction in n-hexane. The molecular structures of 3 and 4 were studied by XRD. It was shown that in a crystal 3 forms wide channels, in which the solvated nonpolar n-hexane molecule is present. The NMR (1H, 13C and 19F), optical (UV/vis absorption, luminescence) and electrochemical (cyclic voltammetry) properties of both compounds were also studied. The impact of the substitution type by the electron withdrawing groups (at the terminal position, such as in 3, or within the compound, such as in 5), on the physical properties was also studied.
THE INTERACTION OF NICKELOCENE WITH BIS(TRIPHENYLGERMYL)CADMIUM
Titova, S. N.,Bychkov, V. T.,Domrachev, G. A.,Razuvaev, G. A.,Struchkov, Yu. T.,Zakharov, L. N.
, p. 167 - 174 (1980)
The reaction of bis(triphenylgermyl)cadmium with nickelocene proceeds through the displacement of a cyclopentadienyl ring and the formation of an organopolymetallic compound containing nine metal atoms: This is a new type of organometallic compound, containing Ni-Cd bonds.
Selective Synthesis and Derivatization of Germasilicon Hydrides
Stueger, Harald,Christopoulos, Viktor,Temmel, Andrea,Haas, Michael,Fischer, Roland,Torvisco, Ana,Wunnicke, Odo,Traut, Stephan,Martens, Susanne
, p. 4034 - 4038 (2016/05/19)
Mixed Si/Ge hydrides SixGeyHz are valuable precursors for the deposition of binary Si-Ge alloys. This work describes the synthesis and full characterization of the previously unknown germaisotetrasilane Ph3GeSi(SiH3)3 (2) on a multigram scale from the reaction of the lithium silanide LiSi(SiH3)3 with Ph3GeCl. The stability of the Si-Ge bond in 2 versus electrophiles and nucleophiles has been investigated with the primary aim of developing new approaches to mixed sila-H-germanes (H3Ge)xSi(SiH3)4-x. With 1 equiv of MeLi, 2 reacted cleanly under cleavage of one Si-Si bond to give Ph3GeSi(SiH3)2Li, which is a valuable synthon for further derivatization. In contrast, the dephenylation reaction of 2 with 1 or 2 equiv of CF3SO3H/iBu2AlH proceeded much less selectively and afforded the desired Ph/H-germasilanes Ph2HGeSi(SiH3)3 and PhH2GeSi(SiH3)3 along with considerable amounts of Si-Ge scission products.
Syntheses and characterization of organo-group 14 cobaloxime compounds
Stolzenberg, Alan M.,Workman, Sarah R.,Gutshail, Jessica E.,Petersen, Jeffrey L.,Akhmedov, Novruz
, p. 6744 - 6754 (2008/10/09)
Reactions of cobaloxime Na[(t-BuPy)Co(DH)2] with Ph 3ECl (E = Si, Ge, Sn, and Pb) were investigated. Metal-metal bonded complexes (t-BuPy)Co(DH)2EPh3 were isolated for E = Sn and Pb. (f-BuPy)Co(DH)2SnPh3·(C2H 5)2O, C39H52CoN5O 5Sn, crystallized in the monoclinic space group P21/c (Z = 4) with unit cell dimensions a = 11.6443-(6) A, b = 15.6085(8) A, c = 22.6354(12) A, β = 96.634(1)°, and V= 4086.4(4) A3 at 295(2) K. The structure resembled those of six-coordinate alkyl cobaloxime complexes and had Co-NPy and Co-Sn distances of 2.056(2) and 2.5568(3) A, respectively. (t-BuPy)Co(DH) 2PbPh3, C35H42CoN5O 4Pb, crystallized in the monoclinic space group P21/n (Z = 4) with unit cell dimensions a = 15.0104(7) A, b = 15.7693(8) A, c = 16.6230(8) A, β = 114.348(1)°, and V = 3584.8(3) A3 at 295(2) K. The complex was nearly isostructural with the Sn analogue and had Co-NPy and Co-Pb distances of 2.049(2) and 2.6191(4) A, respectively. Coupling of the ortho phenyl protons to the spin 1/2 isotopes of Sn and of Pb was a characteristic feature of the 1H NMR spectrum. Additional, longer range couplings were observed for the Pb complex and for both complexes in the 13C NMR. Metal-metal bonded complexes were not obtained for E = Si or Ge. The products isolated in the latter case were the hydride Ph3GeH and the cobalt(II) complex (t-BuPy)Co(DH)2,C17H27CoN5O 4, which crystallized in the orthorhombic space group Pbcn (Z = 8). Unit cell dimensions were a = 17.9821(11) A, b = 9.7449(6) A, c = 22.7374(15) A, and V = 3984.4(4) A3 at 295(2) K. The five-coordinate complex had Co-NPy = 2.096(2) A and was dimeric in the lattice.
