作者: 笨拙處理 時(shí)間: 2025-3-21 23:02
Organogallium Hydrides,5 Torr total pressure [3]). The composition of the colorless, highly viscous product was concluded from the supposedly quantitative thermal decomposition at 180°C to Ga(CH.)., H., and Ga metal [1, 2]. However, later workers were unable to isolate a uniform compound from the discharge. Their viscous 作者: Inferior 時(shí)間: 2025-3-22 02:50 作者: 左右連貫 時(shí)間: 2025-3-22 06:40
Organogallium-Sulfur Compounds,rivatives contain potentially chelating ligands (Nos. 7 to 12 and No. 22), including chelating S N systems where it is impossible to distinguish between covalent and coordinative bonds to either the S or N atom. Derivatives of monothiocarboxylic acids, GaR.OC(S)R’. have already been described with t作者: 哀悼 時(shí)間: 2025-3-22 11:56 作者: 免除責(zé)任 時(shí)間: 2025-3-22 13:26 作者: 免除責(zé)任 時(shí)間: 2025-3-22 19:43
Organogallium-Boron Compounds,, Ga(CH.). was allowed to react with a fivefold excess of B.H. at -15°C for 3 h and was isolated in a 20 to 42% yield by trap-to-trap distillation of the volatiles in a vacuum system [6]. An 80% yield was obtained from the reaction of Ga(CH.).Cl with an excess of powdered LiBH. at -15°C with pumping作者: LARK 時(shí)間: 2025-3-22 23:46 作者: Synthesize 時(shí)間: 2025-3-23 02:41
Compounds of Organogallium Anions,[GaR.]., and is followed by [GaR.X.]. anions (n = 1 to 3) where X stands for hydrogen, halogen, pseudohalogen, oxygen groups, etc. Finally, very extended subsections deal with organogallium pyrazolyl anions bonded to transition metal fragments via the second N atom of pyrazolyl, thus acting as anion作者: crease 時(shí)間: 2025-3-23 05:43 作者: FILLY 時(shí)間: 2025-3-23 12:05 作者: ICLE 時(shí)間: 2025-3-23 13:52 作者: lethal 時(shí)間: 2025-3-23 21:29
A Richer Picture of MathematicsThe organogallium pseudohalides are all of the type GaR.X. They are listed in Table 28 by their monomer formula, but they are oligomeric as far as molecular weights could be determined in solution or were suggested by spectroscopic properties. The preparations of the compounds are described in the further information section.作者: farewell 時(shí)間: 2025-3-23 23:22 作者: Obstruction 時(shí)間: 2025-3-24 03:52
Elke Vereecke,Katrijn Van Laere,Tom RuttinkThe compounds in this section, listed in Table 71, are of the GaR.ER. type (E = P or As, R’ = H only for No. 7), except for No. 6, which contains a Ga(CH.)Cl unit.作者: 馬籠頭 時(shí)間: 2025-3-24 07:21
Organogallium Halides,Only two organogallium fluorides are known. They are of the GaR.F type with R = CH. and C.H. and can be prepared by cleavage of one Ga-C bond of the corresponding GaR.?OC.H.). adducts.作者: Chemotherapy 時(shí)間: 2025-3-24 12:07 作者: Malleable 時(shí)間: 2025-3-24 17:05
Organogallium-Nitrogen Compounds,The compound rapidly forms with CH. evolution by heating Ga(CH.).NH. at 90°C.作者: famine 時(shí)間: 2025-3-24 22:09 作者: 輕率看法 時(shí)間: 2025-3-25 02:21 作者: Goblet-Cells 時(shí)間: 2025-3-25 05:35
https://doi.org/10.1007/978-3-030-99295-8l and solvent (pumping at -15°C for 2 d), followed by distillation at 25 to 30°C under high vacuum, yielded a colorless liquid consisting of a mixture of the compound (76%) and Ga(CH.).H (based on analyses). The products could not be separated because Ga(CH.).GeH. decomposes slowly at 25°C to give Ga(CH.).H and (GeH.)..作者: Yourself 時(shí)間: 2025-3-25 11:03 作者: outskirts 時(shí)間: 2025-3-25 13:36 作者: cinder 時(shí)間: 2025-3-25 17:10 作者: intangibility 時(shí)間: 2025-3-25 20:55 作者: Interferons 時(shí)間: 2025-3-26 02:27
A Revision of the Genus Acromastiguma(CH.). by heating in a higher boiling ether [22]. The preparation of solvent-free Ga(CH.). from GaCl. and CH.MgI in O(C.H.-i). in a 68% yield has been claimed in [44]. The Grignard solution containing an excess of CH.I can also be electrolyzed using a Ga-pool anode and a Pt cathode to give Ga(CH.).作者: canvass 時(shí)間: 2025-3-26 06:14
A Revolution in Economic Theory5 Torr total pressure [3]). The composition of the colorless, highly viscous product was concluded from the supposedly quantitative thermal decomposition at 180°C to Ga(CH.)., H., and Ga metal [1, 2]. However, later workers were unable to isolate a uniform compound from the discharge. Their viscous 作者: prostatitis 時(shí)間: 2025-3-26 08:46
https://doi.org/10.1007/978-3-319-09931-6ysis is proceeding slowly. The rate of reaction can be regulated by controlling the temperature [2]. A checked version of this procedure with an 80% yield, starting with the in situ preparation of the etherate from GaCl. and LiCH. in ether at -78°C, is published in [8]. The resulting reaction mixtur作者: 領(lǐng)巾 時(shí)間: 2025-3-26 14:43
In Case of Emergency: Capital Requirements,rivatives contain potentially chelating ligands (Nos. 7 to 12 and No. 22), including chelating S N systems where it is impossible to distinguish between covalent and coordinative bonds to either the S or N atom. Derivatives of monothiocarboxylic acids, GaR.OC(S)R’. have already been described with t作者: 哄騙 時(shí)間: 2025-3-26 20:29 作者: 善辯 時(shí)間: 2025-3-26 22:17
https://doi.org/10.1007/978-3-030-99295-8l and solvent (pumping at -15°C for 2 d), followed by distillation at 25 to 30°C under high vacuum, yielded a colorless liquid consisting of a mixture of the compound (76%) and Ga(CH.).H (based on analyses). The products could not be separated because Ga(CH.).GeH. decomposes slowly at 25°C to give G作者: cylinder 時(shí)間: 2025-3-27 02:47 作者: Promotion 時(shí)間: 2025-3-27 08:45
Virginia Woolf and D.H. Lawrence,scribed in Sections 13.6.2.1 to 13.6.2.4. With organogallium species five types of complexes have been described in the literature. Formula I represents adducts of Ga(C.H.). with anionic 18-electron complexes (no adducts with neutral species are known). Compounds with a three-coordinate Ga atom are 作者: 凝結(jié)劑 時(shí)間: 2025-3-27 12:31 作者: 職業(yè)拳擊手 時(shí)間: 2025-3-27 16:42
Intermezzo: American Populism and the Jews,w adducts, and were believed to arise from reductive elimination of Si(CH.). from M[Ga(CH.Si(CH.).).H] intermediates [1]. But these results could not be reproduced later, and the products were identified as alkali metal compounds of the hydrido anion [Ga(CH.Si(CH.).).H]. [2]; see 13.2, p. 320.作者: overture 時(shí)間: 2025-3-27 21:27 作者: Optometrist 時(shí)間: 2025-3-28 00:38 作者: 錯(cuò)誤 時(shí)間: 2025-3-28 04:58 作者: Endometrium 時(shí)間: 2025-3-28 08:35
is concluded by a few low-valence organogallium compounds (Chapter 14) that (I) atom and an aromatic ligand in an TJe fashion. exhibit bonding interaction between a gallium Due to a free coordination site at the Ga atom, neutral compounds form many adducts with Lewis bases (symbol D). These adducts are descr978-3-662-07374-2作者: 不如樂死去 時(shí)間: 2025-3-28 11:58
Organogallium-Oxygen Compounds, electroreduction of CH.I on a Ga cathode in CH.CN-NaClO. gives the compound in about 35 to 40% yield along with “GaCH.O” [10]. The formation of Ga(CH.).OH by thermal decomposition of Ga(CH.).OOCH. at 120°C in C.H. [12] and of Ga(CH.).OOC.H.-t under similar conditions [12,13] is also reported; see p作者: NIP 時(shí)間: 2025-3-28 17:16 作者: 性行為放縱者 時(shí)間: 2025-3-28 21:24 作者: 具體 時(shí)間: 2025-3-28 23:09
Book 1986Latest editiontely.to the end of 1984 and includes many references to the literature up to the end of 1985. The organic chemistry of gallium is largely dominated by compounds of the types GaR3 (Chapter 1), GaR X _ (Chapters 2 to 12), and M[GaRnX4_nl (M = cation, Chapter 13), where X n 3 n stands for a non-carbon 作者: 是他笨 時(shí)間: 2025-3-29 04:33 作者: filicide 時(shí)間: 2025-3-29 10:25 作者: 友好 時(shí)間: 2025-3-29 11:30 作者: CLASP 時(shí)間: 2025-3-29 18:37 作者: 連鎖,連串 時(shí)間: 2025-3-29 22:38
Virginia Woolf and D.H. Lawrence,(No. 11 in Table 73) was also described but only characterized by IR spectroscopy. Incorporation of N-bases (C.H.N, tetramethylethylenediamine, 2,2′-bipyridyl) causes the molecule to monomerize to give compounds of Formula V, containing a formally “subvalent” Ga atom.作者: 施魔法 時(shí)間: 2025-3-30 00:01
Organogallium-Transition Metal Compounds,(No. 11 in Table 73) was also described but only characterized by IR spectroscopy. Incorporation of N-bases (C.H.N, tetramethylethylenediamine, 2,2′-bipyridyl) causes the molecule to monomerize to give compounds of Formula V, containing a formally “subvalent” Ga atom.作者: 聯(lián)邦 時(shí)間: 2025-3-30 07:45
A Revolution in Economic Theoryliquid (condensing at -15°C in a vacuum system) did not correspond in its properties to those reported for Ga(CH.).H and yielded on pyrolysis only ~43% of the expected amount of Ga(CH.). and H. [5]. Ga(CH.).H was mentioned as a decomposition product of unstable Ga(CH.).GeH. but neither compound was isolated in a pure form and characterized [6].作者: 悲觀 時(shí)間: 2025-3-30 10:44 作者: 愛了嗎 時(shí)間: 2025-3-30 13:28 作者: 嘲弄 時(shí)間: 2025-3-30 19:19 作者: beta-cells 時(shí)間: 2025-3-30 23:19 作者: 十字架 時(shí)間: 2025-3-31 01:48
Organogallium-Sulfur Compounds,en covalent and coordinative bonds to either the S or N atom. Derivatives of monothiocarboxylic acids, GaR.OC(S)R’. have already been described with the gallium-oxygen compounds in 5.1.3.2, p. 194. A few adducts are listed at the end of Table 48.作者: Neuropeptides 時(shí)間: 2025-3-31 06:53
Compounds of Organogallium Anions,ded subsections deal with organogallium pyrazolyl anions bonded to transition metal fragments via the second N atom of pyrazolyl, thus acting as anionic donor ligand with respect to the transition metal. Depending on the type of the transition metal moiety, these compounds may be neutral or ionic.作者: Robust 時(shí)間: 2025-3-31 10:35
Sachbuch an Eltern und Erzieher und bietet vor allem Lehrern eine fundierte Basis für den Unterricht. Zu allen Themen werden die wissenschaftlich gesicherten medizinischen Grundlagen beschrieben und Fachbegriffe verst?ndlich erkl?rt.978-3-211-83319-3978-3-7091-6330-6
