Results 61 to 70 of about 49,669 (135)

Direct Synthesis of C-Substituted [RC(O)CH₂-CB₁₁H₁₁]⁻ Carborate Anions

Inorganics
A new synthetic method for the synthesis of C-substituted [RC(O)CH2-CB11H11]− carborate anions has been developed. The reaction of [closo-B11H11]2− with terminal alkynes in the presence of a copper catalyst leads to insertion into the boron cluster, and ...
Vanessa C. Barra, Eduard Bernhardt, Sarah Fellinger, Carsten Jenne, Shiomi S. Langenbach   +4 more
doaj   +1 more source

Synthesis and characterization of GeH2Cp*2 and its structural comparison with SiXHCp*2(X=Cl, H) and SnCl2Cp*2

Main Group Metal Chemistry, 2017
The organogermane GeH2Cp*2 (1) was synthesized by the reaction of GeCl2Cp*2 (A) with LiAlH4 in quantitative yield, whereas the synthesis of the previously reported compounds SiCl2Cp*2 (B), SnCl2Cp*2 (C), SiClHCp*2 (D) and SiH2Cp*2 (E) followed ...
Fritzsche Ronny, Rüffer Tobias, Lang Heinrich, Mehring Michael   +3 more
doaj   +1 more source

Zwischen Skylla und Charybdis. – Gedanken zur Entwicklung des Fachs «Räume, Zeiten, Gesellschaften» auf der Sekundarstufe I und in der Lehrerinnen- und Lehrerbildung

Beiträge zur Lehrerinnen- und Lehrerbildung, 2016
Seit der Freigabe des Lehrplans 21 gibt das neue Integrationsfach «Räume, Zeiten, Gesellschaften» (RZG) viel zu reden. Anders als im Bereich «Natur und Technik» (NT), das drei Naturwissenschaften vereint, prallen bei RZG naturwissenschaftliche ...
Rolf Bürki, Peter Gautschi, Monika Reuschenbach, Jan-Erik Steinkrüger, Rolf Peter Tanner   +4 more
doaj   +1 more source

Crystal structure of 3-{1′-[3,5-bis(trifluoromethyl)phenyl]ferrocenyl}-4-bromothiophene

Acta Crystallographica Section E, 2014
The molecular structure of the title compound, [Fe(C9H6BrS)(C13H7F6)], consists of a ferrocene backbone with a bis(trifluoromethyl)phenyl group at one cyclopentadienyl ring and a thiophene heterocycle at the other cyclopentadienyl ring.
Elisabeth A. Poppitz, Marcus Korb, Heinrich Lang   +2 more
doaj   +1 more source

The Homopolyatomic Sulfur Cation [S₂₀]²⁺

Inorganics
Homopolyatomic cations of the main group elements and of the element sulfur, in particular, are used as tutorial examples to teach structure and bonding in inorganic chemistry.
Janis Derendorf, Lara Heiderich, Carsten Jenne, Marc C. Nierstenhöfer   +3 more
doaj   +1 more source

Crystal structure of ruthenocenecarbonitrile

Acta Crystallographica Section E: Crystallographic Communications, 2015
The molecular structure of ruthenocenecarbonitrile, [Ru(η5-C5H4C[triple-bond]N)(η5-C5H5)], exhibits point group symmetry m, with the mirror plane bisecting the molecule through the C[triple-bond]N substituent.
Frank Strehler, Marcus Korb, Heinrich Lang   +2 more
doaj   +1 more source

Promoting technical and methodological competencies in medical-oriented engineering degree courses by building digital transmitted-light and holographic microscopes: A pilot project

GMS Journal for Medical Education
This work presents a structured cross-course teaching concept designed for biomedical engineering students, focusing on acquiring technical skills through the construction and application of 3D-printed robotic and holographic microscopes, spanning over ...
Christian Hanshans, Friederike Burkhardt
doaj   +1 more source

Crystal structure of a P4-bridged (η5-pentamethyl-cyclopentadienyl)(η5-adamantylcyclopentadienyl) titanium(III)complex, C50H66P4Ti2

Zeitschrift für Kristallographie - New Crystal Structures, 2017
C50H66P4Ti2, orthorhombic, P21212 (no. 18), a = 14.3799(5) Å, b = 15.4444(6) Å, c = 9.5555(5) Å, V = 2122.17(16) Å3, Z = 2, Rgt(F) = 0.0338, wRref(F2) = 0.0643, T = 153(2) K.
Oswald Tim, Beermann Thomas, Saak Wolfgang, Beckhaus Rüdiger   +3 more
doaj   +1 more source

Evidenzorientierung beim mikroadaptiven Unterrichten

Beiträge zur Lehrerinnen- und Lehrerbildung
Der Beitrag betrachtet drei Typen der Evidenzorientierung beim mikroadaptiven Unterrichten: Theorieorientierung, Produktnutzung und Methodenadaption.
Timo Leuders, Katharina Loibl, Martin Schwichow, Tobias Hoppe, Felix Koch, Christian Leukel   +5 more
doaj   +1 more source

Naturwissenschaften im Kindesalter

, 2005
Lück G. Naturwissenschaften im Kindesalter. Praxis der Naturwissenschaften - Chemie in der Schule.
Lück, Gisela
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