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Aufsatz Revealing the origin of magnetoresistance in unipolar amorphous organic field-effect transistors 

Isenberg, Carolin; Saragi, Tobat P. I. (2014)
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Aufsatz Diastereoselective synthesis of a bicyclic β-lactam with penicillin G-like spectrum of activity by carbonylation of an acyclic diaminocarbene 

Schulz, Tim; Färber, Christian; Leibold, Michael; Bruhn, Clemens; Prochnow, Pascal; Bandow, Julia E.; Schneider, Tanja; Porsch, Timo; Holthausen, Max C.; Siemeling, Ulrich (2014)
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Aufsatz Preparation and Molecular Structure of a Cyclopentyl-Substituted Cage Hexasilsesquioxane T6 (T = cyclopentyl-SiO1.5) Starting from the Corresponding Silanetriol 

Kahr, Jürgen; Belaj, Ferdinand; Pietschnig, Rudolf (2017-10-04)
Cyclopentyl substituted silanetriol can be prepared and isolated. Its condensation yields the corresponding disiloxanetetrol as a primary condensation product. Further condensation leads to the hexameric polyhedral silsesquioxane cage T6. The latter has been mentioned in the literature before however, lacking structural data. All compounds have been characterized with multinuclear NMR spectroscopy and, in addition, the molecular structures have been determined in the case of the disiloxanetetrol and the hexasilsesquioxane ...
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Aufsatz Metallated [3]Ferrocenophanes Containing P3M Bridges (M = Li, Na, K) 

Isenberg, Stefan; Frenzel, Lisa-Marie; Bruhn, Clemens; Pietschnig, Rudolf (2018-07-11)
Alkali-metal phosphanides can be embedded into a [3]ferrocenophane scaffold giving rise to bicyclic ferrocenophanes [MFe(C5H4PtBu)2P] (M = Li, Na, K). Coordination of the alkali-metal ions takes place via the terminal phosphorus atoms adopting a puckered P3M four-membered ring. All compounds were characterized via single-crystal X-ray diffraction and multinuclear NMR spectroscopy (1H, 31P, 7Li), whereas 13C NMR data could only be recorded for the Li derivative, owing to the limited solubility of its heavier congeners ...
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Aufsatz Synthesis and crystal structure of μ-[1,1′-di(mesitylphosphanido)ferrocene]bis[η5-cyclopentadienylnickel(II)] tetrahydrofurane solvate, C42H48FeNi2OP2 

Langen, Christina; Bruhn, Clemens; Siemeling, Ulrich (2018-03-08)
C42H48FeNi2OP2, orthorhombic, Pbca (no. 61), a = 9.4551(4) Å, b = 19.7133(9) Å, c = 39.693(2) Å, V = 7398.4(6) Å3, Z = 8, Rgt(F) = 0.0598, wRref(F2) = 0.1481, T = 100(2) K.
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Aufsatz Coinage Metal Complexes of the Carbenic Tautomer of a Conjugated Mesomeric Betaine Akin to Nitron 

Thie, Charlotte; Bruhn, Clemens; Leibold, Michael; Siemeling, Ulrich (2017-07-07)
This study was motivated by our recent observation that the analytical reagent Nitron (2) is an “instant carbene”, whose reaction with coinage metal salts MX afforded complexes of its carbenic tautomer 1,4-diphenyl-3-phenylamino-1,2,4-triazol-5-ylidene (2′). Our aim was to establish an alkyl homologue of 2 in order to achieve a carbenic tautomer of higher donicity. For this purpose 1-tert-butyl-4-methyl-1,2,4-triazol-4-ium-3-tert-butylaminide (6) was synthesized. Its reactions with MX afforded complexes of the carbenic ...
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Aufsatz Optical amplification and stability of spiroquaterphenyl compounds and blends 

Fuhrmann-Lieker, Thomas; Lambrecht, J.; Hoinka, Nicolai Morten; Kiurski, M.; Wiske, A.; Hagelstein, G.; Yurttagül, N.; Abdel-Awwad, M.; Wilke, H.; Messow, F.; Hillmer, H.; Salbeck, J. (2015)
In this contribution, we present a systematic investigation on a series of piroquaterphenyl compounds optimised for solid state lasing in the near ultraviolet (UV). Amplified spontaneous emission (ASE) thresholds in the order of 1 μJ/cm2 are obtained in neat (undiluted) films and blends, with emission peaks at 390 1 nm for unsubstituted and meta-substituted quaterphenyls and 400 4 nm for para-ether substituted quaterphenyls. Mixing with a transparent matrix retains a low threshold, shifts the emission to lower ...

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