披肩
发表于 2025-3-25 04:00:07
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假装是你
发表于 2025-3-25 07:37:46
arrungsschwindung und geringe Seigerungserscheinungen im Gußstück. Maßgebend für die Eigenschaften der Gußeisenwerkstoffe ist ihr Gefügeaufbau, der sich in bezug auf das Grundgefüge bei den unlegierten Sorten in weitgehender Annäherung aus dem stabilen Diagramm Fe-C. und dem metastabilen Diagramm Fe
都相信我的话
发表于 2025-3-25 11:51:40
E. P. Kündig,N. P. Do Thi,P. Paglia,D. P. Simmons,S. Spichiger,E. Wenger
中和
发表于 2025-3-25 18:23:46
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轻推
发表于 2025-3-25 22:54:30
The Behaviour of a Dialuminoxane and Distannoxanes towards Organic Molecules,-determining step. The concept of the combined acid-base attack is exemplified by the behaviour of organoaluminium amides towards trisubstituted oxiranes, which are converted into allylic alcohols. The coordination of the reagent on the oxirane oxygen occurs in a fast equilibrium, whereas the nitrog
Restenosis
发表于 2025-3-26 02:33:41
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JOT
发表于 2025-3-26 05:45:31
,Organometallic Reactivity and Applied Quantum Chemistry — Some Aspects of CH-Activation,certainly reached a point now, where ab initio calculations for small molecules, composed of light atoms, appear to provide numerically accurate predictions of structures and energies, comparable or even superior to experimental data. The ultimate goal of molecular quantum chemistry, the reliable a
arboretum
发表于 2025-3-26 12:02:19
Novel Metalla-Heterocycles Formed By , , and Cycloaddition Reactions of Cyclopentadd out whether also derivatives of the general composition C.H.Co(PR.)., in which L is a n-acceptor ligand, despite of the reduced electron density at the metal atom still show the same type of behavior. After the carbonyl compound C.H.Co(PMe.)C0 had been investigated , the isocyanide cobalt compl
钻孔
发表于 2025-3-26 12:50:26
Metal Carbenes in Cycloaddition Reactions,esents a well-established research area in organometallic chemistry. We are now able to synthesize carbene complexes of nearly all transition metals. We can control the oxidation state, the ligand sphere and the stereochemistry of the metal as well as the reactivity of the metal to carbene bond (Döt
filial
发表于 2025-3-26 18:58:20
Ketenyl Complexes in the Organic Synthesis,s such as phosphines via an intramolecular carbon-carbon coupling to yield n. ketenyl complexes (Kreißl 1977, 1979) and trimethylphosphine-substituted carbyne complexes. The n.-ketenyl compounds can be isolated as stable, deeply colored crystals