0000000000121462

AUTHOR

Hans Joachim Breunig

showing 5 related works from this author

1H NMR spectra of Ph2SbX, PhSbX2, and Ph3SbX2 (XCl, Br, I); 121Sb Mössbauer spectra of PhSbX2 and crystal structure of Ph2SbI1

1996

1H NMR spectroscopic data of Ph2SbX, PhSbX2, and Ph3SbX2 (XCl, Br, I) have been determined by iterative simulation. 121Sb Mossbauer spectra of PhSbX2 (XCl, Br, I) have been measured. The synthesis of Ph2SbI is achieved by reaction of Ph2SbCl with NaI in ethanol. The crystal structure of Ph2SbI consists of molecules with pyramidal C2SbI units.

StereochemistryOrganic Chemistrychemistry.chemical_elementCrystal structureBiochemistrySpectral lineInorganic ChemistryCrystallographyAntimonychemistryMaterials ChemistryProton NMRMoleculeMossbauer spectraPhysical and Theoretical ChemistryJournal of Organometallic Chemistry
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Kristallstruktur, thermische Ausdehnung und Farbwechsel von (Me3Ge)2Sb-Sb(GeMe3)2 und anderen Distibanen

1989

Abstract Single crystals of the distibanes (Me3M)4Sb2 (1: M = Si, 2: M = Ge) are obtained by the oxidation in air of (Me3M)3Sb. The crystal structure of 2 is reported. 2 forms linear chains of distibane molecules in trans conformation with Sb ··· Sb contacts of 386 pm at −110°C and 390 pm at 22°C. The thermal expansion of crystals of 2 and (Me3Sn)4Sb2 (3) has been determined. UV-VIS spectra of 1–3, Me4Sb2 (4), Et4Sb2 (5), and Ph4Sb2 (6) in different phases have been recorded. The spectra of 1–5 are consistent with the visible colour changes.

Inorganic ChemistryCrystallographyChemistryStereochemistryOrganic ChemistryX-ray crystallographyMaterials ChemistryMoleculeCrystal structurePhysical and Theoretical ChemistryBiochemistryThermal expansionSpectral lineJournal of Organometallic Chemistry
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Strukturen von [Me4Sb]2[MeSbI4]MeSbI2, und [Me4Sb]I. Darstellung von Me3Sb · MeSbI2 und farbwechsel bei Me4Sb2 · Me2SbBr

1992

Abstract The crystal structures of the complex [Me 4 Sb] 2 [MeSbI 4 ] ( 1 ) and its precursors MeSbI 2 ( 2 ) and [Me 4 Sb]I ( 3 ) are reported. In 1 there are tetrahedral cations and square pyramidal anions with Sb-I distances of 290–320 pm. The structure of 2 contains MeSbI 2 molecules. They associate via iodine bridges to form linear chains with alternating short and long Sb-I distances. The coordination around antimony is distorted tetragonal pyramidal. The tetrahedral coordination of the ions in 3 results in the formation of a wurtzite type structure with antimony-iodine distances of 406 and 435 pm. The novel adducts Me 3 Sb·Me 2 SbI 2 ( 4 ) and Me 2 SbSbMe 2 ·Me 2 SbBr ( 5 ) are formed…

StereochemistryChemistryOrganic Chemistrychemistry.chemical_elementCrystal structureBiochemistrySquare pyramidal molecular geometryAdductIonInorganic ChemistryCrystallographyTetragonal crystal systemAntimonyMaterials ChemistryMoleculePhysical and Theoretical ChemistryWurtzite crystal structureJournal of Organometallic Chemistry
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(Me3Sn)2SbSb(SnMe3)2, 1∞-verknüpfte SbSb-Hanteln in einem thermochromen Distiban mit Schweratomgerüst

1987

Abstract Single crystals of the thermochromic distibane (Me 3 Sn) 4 Sb 2 ( 1 ) are obtained by irradiation of (Me 3 Sn) 3 Sb with sunlight. The crystal structure of 1 is reported as linear chains of distibane molecules in trans conformation with Sb ⋯ Sb contacts of 389 ppm. Diffuse reflexion spectra of 1 in the solid state and in solution demonstrate thermochromic effect. The Raman spectrum of solid 1 exhibits strong absorption at 162 cm −1 for ν(Sb 2 ).

ThermochromismChemistryStereochemistryOrganic ChemistryCrystal structureBiochemistrySpectral lineInorganic ChemistryCrystallographysymbols.namesakeX-ray crystallographyMaterials ChemistrysymbolsMoleculeIrradiationPhysical and Theoretical ChemistryAbsorption (chemistry)Raman spectroscopyJournal of Organometallic Chemistry
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Synthesen und Strukturen von Ethyl‐, Propyl‐, Butyl‐ und Mesitylantimon

1989

Die Enthalogenierung von Alkylantimondibromiden RSbBr2 (R = Et, Pr, Bu) mit Mg in THF fuhrt zu gelben Losungen, die uberwiegend die Antimonfunfringe (RSb)5 neben den Vierringen (RSb)4 enthalten. Die Trimeren (RSb)3 konnen massenspektrometrisch nachgewiesen werden. Beim Entfernen des Losungsmittels bilden sich reversibel die Polymeren (RSb)x (x » 5) in Form schwarzer Festkorper. In den Ringen nehmen die Substituenten R maximale trans-Positionen ein. Die Kristallstruktur von (MesSb)4 · Benzol enthalt linear …Sb4…Sb4…-verknupfte Cyclotetrastiban-Aren-Komplexe mit guter η6-Haptizitat des Benzolmolekuls an eines der vier Sb-Atome (Ringmitte…Sb 3.81 A, Winkel zur Flachennormale 5°). Der Sb4-Ring …

Inorganic ChemistryAntimonyChemistryPolymer chemistrychemistry.chemical_elementMoleculeCrystal structureRing (chemistry)Medicinal chemistryChemische Berichte
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