Conveners
Structural Chemistry I
- Thomas Doert (Technische Universität Dresden)
For alkali metal thallides in the ratio A:Tl 1:2 two main type structures (A15Tl27 (A= Rb, Cs) and K49Tl108) are known in literature. The single crystal X-Ray analyses of Cs2.27K12.73Tl27 and Rb49Tl∼110 clearly prove, that the type structures are not limited to a particular alkali metal. Apparently, the occupation of certain sites and slight changes in the thallium content account for the...
We synthesized novel Sr-carbonates at moderate pressures and temperatures in a laser heated diamond anvil cell. We obtained the sp$^3$-carbonates Sr$_2$[CO$_4$] and Sr$_3$[CO$_4$]O with isolated CO$_4$ tetrahedra and both phases can be recovered at ambient condition. We also synthesized Sr[C$_2$O$_5$] by a reaction of Sr[CO$_3$] with CO$_2$ which is the first inorganic pyrocarbonate salt.
The design of novel ligand systems allows for ever more control over structural and hence reactive capacities of organometallic systems. We discuss the development of a novel family of pendant-phosphine amide ligands, which show a diverse range of fluxional binding characteristics, and even reactive non-innocent, thus lending a new set of tools to the modern synthetic chemist.
We demonstrated the synthesis of carbonates containing [CO4]-groups at moderately high pressures (20-30 GPa) by reacting carbonates with oxides or CO2. These carbonates have different chemical compositions than the well-known ‘conventional’ carbonates (MeCO3) and are enriched either with the metal oxide or with CO2. Here we will give an overview of carbonates containing [CO4]-groups and will...
Two newly discovered compounds, Rb2Zn(TeO3)(CO3)∙H2O and Na2Zn2Te4O11, both crystallize with order-disorder (OD) structures comprising of layers and feature a high stacking fault probability. Both cases are unusual in that the OD character is due to different translation lattices of the adjacent layers. The stacking disorder is visible in the diffraction patterns in the form of diffuse...
