Die Pyridinaddukte der Goldhalogenide. 3. Darstellung,Eigenschaften und Kristallstruktur zweier Modifikationen von AuBr · NC5H5 |
| |
| Authors: | Walter Conzelmann Wolfgang Hiller Joachim Strhle George M Sheldrick |
| |
| Institution: | Walter Conzelmann,Wolfgang Hiller,Joachim Strähle,George M. Sheldrick |
| |
| Abstract: | Pyridine Adducts of Gold Halides. 3. Preparation, Properties, and Crystal Structure of Two Modifications of AuBr · NC5H5 The reaction of AuBr · S(CH2C6H5)2 with pyridine in absolute ethanol yields the crystalline compound AuBr · pyridine. It crystallizes in the triclinic space group P1 with the lattice constants a = 791.5(2) pm, b = 935.6(2) pm, c = 1005.1(3) pm, α = 85.78(2)°, β = 102.07(2)°, γ = 109.31(2)°. When the solvent is toluene, monoclinic crystals are formed with the space group C2/c and a = 1225.9(2) pm, b = 1522.2(3) pm, c = 1459.7(3) pm, β = 97.82(2)°. The triclinic structure is built up by Au4 zig-zag chains AuBr2—Au(py)2—Au(py)2—AuBr2, whereas the monoclinic phase contains infinite chains with the sequence AuBr2—Au(py)2. In each case the linkage is formed by weak Au—Au-interactions. |
| |
| Keywords: | |
|
|
