TY  - JOUR
A1  - Schenk, Wolfdieter A.
A1  - Rueb, Doris
A1  - Burschka, Christian
T1  - Ein Dithioester als allylartiger 4e-Ligand
T1  - Coordination schemes of C:S functional compounds : 3. A dithioester as an allyl-type 4-electron ligand
N2  - No abstract available
KW  - Anorganische Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-57831
ER  - 
TY  - JOUR
A1  - Hoffmann, Gerhard Georg
A1  - Burschka, Christian
T1  - (I\(_2\)GaS-i-C\(_3\)H\(_7\))\(_2\), das erste butterfly-Molekül mit vierfach koordiniertem Gallium
T1  - The first "butterfly" molecule with four-coordinate gallium. Synthesis and structure of (I\(_2\)GaS-i-C\(_3\)H\(_7\))\(_2\)
N2  - No abstract available
KW  - Chemie
KW  - Gallium
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31432
ER  - 
TY  - JOUR
A1  - Wieber, Markus
A1  - Wirth, Dieter
A1  - Burschka, Christian
T1  - Darstellung und Struktur einiger \(\eta^5\)-Cyclopentadienyldicarbonyleisenbismut-Verbindungen Cp(CO)\(_2\)FeBiX\(_2\) mit fünffach koordiniertem Bismutatom
T1  - Synthesis and Structure of some \(\eta^5\)-Cyclopentadienyldicarbonylironbismuth compounds Cp(CO)\(_2\)FeBiX\(_2\) with five-coordinated Bismuth Atoms
N2  - No abstract available
KW  - Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-46840
ER  - 
TY  - JOUR
A1  - Schenk, Wolfdieter A.
A1  - Leissner, Johanna
A1  - Burschka, Christian
T1  - Vier- und fünffach koordinierte Schwefelmonoxid-Komplexe des Rhodiums und Iridiums
T1  - Four- and five-coordinated sulfur monoxide complexes of Rhodium and Iridium
N2  - No abstract available
KW  - Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-46838
ER  - 
TY  - JOUR
A1  - Sheldrick, W. S.
A1  - Linoh, H.
A1  - Tacke, Reinhold
A1  - Lambrecht, G.
A1  - Moser, U.
A1  - Mutschler, E.
T1  - Crystal and molecular structures of the (R)-enantiomer and the racemate of the antimuscarinic agent (cyclohexyl)phenyl[2-(pyrrolidin-1-yl)ethyl]silanol (sila-procyclidine)
N2  - The crystal structures of the (R)-enantiomer (2b) and the racemate (1 b) of (cyclohexyl)phenyl[2- (pyrrolidin-1-yl)ethyl]silanol (sila--procyclidine) have been determined by X -ray structural analysis. The absolute configuration of (2b) was established. (2b) crystallizes in the orthorhombic space group P2\(_1\)2\(_1\)2\(_1\), with a = 15.221 (1 ), b = 17.967(1 ), c = 6.463(1) A, and Z = 4. (1 b) crystallizes in the monoclinic space group P2\(_1\)/c, with a = 6.441 (1 ), b = 17.1 82(7), c = 16.707(4) A, ß = 1 03.86(2r, and Z = 4. The structures were refined to respective R factors of 0.044 and 0.058. The molecular conformation of sila-procyclidine is identical in the two different structures. lntermolecular 0-H • • • N hydrogen bonding is observed in both crystallattices.ln (1 b) (R)- and (S)-configurated molecules form centrosymmetric dimers, in (2b) the (R)-configurated molecules are linked into infinite chains parallel to the c axis. The (R)-configurated sila--procyclidine (2b) has higher affinity for ileal and atrial muscarinic receptors of the guinea pig than the (S)-configurated enantiomer (3b).
KW  - Anorganische Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-63776
ER  - 
TY  - JOUR
A1  - Tacke, Reinhold
A1  - Link, M.
A1  - Zilch, H.
T1  - Eine neue in situ-Darstellung von (Trimethyl-silyl)trifluormethansulfonat durch thermisch induzierte Umlagerung
T1  - A New in situ Preparation of Trimethylsilyl Trifluoromethanesulfonateby Thermally Induced Rearrangement
N2  - A new in situ preparation of trimethylsilyl trifluoromethanesulfonate (3) is described: 3 is generated by a thermally induced rearrangement of (dimethylsilyl)methyl trifluoromethanesulfonate (2), which can be prepared by reaction of (CH\(_3\))\(_2\)Si(H)CH\(_2\)OH (1) with (CF\(_3\)SO\(_2\))\(_2\)O. Starting with C\(_6\)H\(_5\)(CH\(_3\))Si(H)CH\(_2\)OH (5), the derivative (methylphenylsilyl)methyl trifluoromethanesulfonate (6) can be obtained by a similar method. Its thermally induced rearrangement Ieads to dimethylphenylsilyl trifluoromethanesulfonate (7). The rearrangements 2---> 3 and 6---> 7 were found to be first-order reactions with half-lifes at 80 oc of 0.75 and 1.7 h, respectively.
KW  - Anorganische Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-63784
ER  - 
TY  - JOUR
A1  - Tacke, Reinhold
A1  - Linoh, H.
A1  - Zilch, H.
A1  - Wess, J.
A1  - Moser, U.
A1  - Mutschler, E.
A1  - Lambrecht, G.
T1  - Synthese und Eigenschaften des selektiven Antimuskarinikums Cyclohexylphenyl(3-piperidinopropyl)silanol
T1  - Syntbesis and Properries of the Selective Antimuscarinic Agent Cyclohexylphenyl(3-piperidinopropyl)silanol
N2  - Die Synthese des selektiven Antimuskarinikums Cyclohexylpheny\{3-piperidinopropyl)sila· nol (1 b) wird beschrieben. 1 b wurde - ausgehend von (3·Chlorpropyl)trimethoxysilan - durch eine vierstufige Reaktionsfolge erhalten und als Hydrochlorid 2b mit einer Gesamtausbeute von etwa 45°/o isoliert. - 1 b ist aufgrund seiner großen pharmakologischen Se· lektivität zu einer Standardsubstanz in der experimentellen Pharmakologie bei der Differenzierung von Muskarinrezeptoren geworden.
N2  - The synthesis of thc selective antimuscarinic agent cyclohexylphenyl(3-piperidinopropyl)silanol (1 b) is described. Starting with (3-chloropropyl)trimethoxysilane, I b was obtained by four reaction steps and isolated as hydrochloride 2b with a total yield of about 45°/o. - Because of its high pharmacological selectivity 1 b has become a reference drug in experimental pharmacology for the differentiation of muscarinic rcceptors.
KW  - Anorganische Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-63798
ER  - 
TY  - JOUR
A1  - Tacke, Reinhold
A1  - Link, Matthias
A1  - Bentlage-Felten, Anke
A1  - Zilch, Harald
T1  - Zum thermischen Verhalten einiger Kohlensäure[(methylphenylsilyl)methyl]ester-Derivate
T1  - On the Thermal Behaviour of Some (Methylphenylsilyl)methyl Carbonate Derivatives
JF  - Zeitschrift für Naturforschung B
N2  - The synthesis and the thermal behaviour of the (methylphenylsilyl)methyl carbonates \(CH_3(C_6H_5)Si(H)CH_2OC(O)X (6: X = OCH_3; 7: X = Cl; 8: X = N(CH_3)_2)\) is described. 8 rearranges in toluene solution at 100 °C quantitatively to give the carbam oyloxysilane \(C_6H_5(CH_3)_2SiOC(O)N(CH_3)_2\) (11), whereas neat 6 and 7 at 135 °C undergo quantitative formation of \(C_6H_5(CH_3)_2SiOCH_3\) (12) and \(C_6H_5(CH_3)_2SiCl\) (13), respectively. The formation of 12 and 13 is explained by a rearrangement reaction (by analogy to the rearrangement of 8), follow ed by a decarboxylation. The thermally induced transformations 6 →12, 7 →13, and 8 →11 were found to be first-order reactions with half-lifes of ~2.6 h (135 °C, neat), ~4.5 h (135 °C, neat), and ~3.7 h (100 °C, in toluene), respectively.
KW  - decarboxylation
KW  - (Methylphenylsilyl)methyl carbonates
KW  - rearrangement
KW  - dimethylphenylsilyl carbonates
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-128293
VL  - 40
IS  - 7
ER  - 
TY  - JOUR
A1  - Wieber, M.
A1  - Schmidt, E.
A1  - Burschka, Christian
T1  - Dimethyl-tellur-bis(alkylxanthogenate)
T1  - Tellurium-Dimethyl-bis(alkylxanthates)
N2  - Man erhält Dimethyl-tellur-bis(alkylxanthogenate) des Typs R2Te(S2COR'lz mit R = CH3, sowie R' = CHs, C2Hs, i-CsH7 durch Umsetzung von Dimethyltellur-diiodid mit den stöchiometrischen Mengen der jeweiligen Natriumxanthogenate. Ebemalls führt eine Einschiebung von CS2 in die Te-O-Bindung von Dimethyl-tellur-bis(alkoxyden) zu den Dimethyl-tellur-bis(alkylxanthogenaten). Die Röntgenstrukturanalyse von (CH3hTe(S2COCH3)2 zeigt, daß das Molekül im Kristall als V'-pentagonale Bipyramide vorliegt.
N2  - Tellurium dimethyl-bis(alkylxanthates) of the type R2Te(S2COR')2 with R = CH3 and R' = CH3, C2H5, i-CsH 7 are obtained by reaction of tellurium dimethyldiiodide with freshly prepared sodium xanthates. Another preparative method is the insertion of CS2 in tellurium dimethylbis(alkoxydes). The X-ray analysis of (CH3)2Te(S2COCHsh shows, that in the crystal the molecule has a IjJ-pentagonal bipyramidal configLlration around tellurium.
KW  - Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31934
ER  - 
TY  - JOUR
A1  - Wieber, M.
A1  - Wirth, D.
A1  - Metter, J.
A1  - Burschka, Christian
T1  - Methylbis(dithiocarbamato)stibane : Synthese und Kristallstruktur.
T1  - Methylbis(dithiocarbamato)stibines : Synthesis and crystal structure
N2  - Die Titelverbindungen können durch Reaktion von Methyldibromstiban mit Natriumdithiocarbamaten bei tiefen Temperaturen (-78°C) erhalten werden. Bezüglich seiner Kristallstruktur läßt sich CH3Sb(S2CNEt2)2 gut zwischen dem entsprechenden Bismutan CH3Bi(S2CNEt2)2 und dem Arsan C6H5As(S2CNEt2)2 einordnen. Anzeichen für ungewöhnliche intermolekulare Wechselwirkungen sind bei dieser Verbindung nicht zu erkennen.
N2  - The title compounds are obtained by reaction of methyldibromostibane with the sodium dithiocarbamates in methanol at low temperature (-78°C). The crystalstructure of CH3Sb(S2CNEt2)2 as elucidated by X-ray diffraction shows no special intermolecular interactions. It can be compared to that of the corresponding bismutane CH3Bi(S2CNEt2)2 and the arsane C6H5As(S2CNEt2)2.
KW  - Chemie
Y1  - 1985
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31949
ER  -