Development of new Complex Compounds via Solid State Metathesis Reactions

• Applicant: Professor Dr. Hans-Jürgen Meyer
• Subject Area: Solid State and Surface Chemistry, Material Synthesis
• Term: from 2012 to 2021
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 213624204

• Final Report Year: 2022

Final Report Abstract

Within this project we have undertaken systematic investigations for the discovery of various new tin carbodiimide compounds. Preparations were done by solid state metathesis reactions. These reactions are showing excellent results in the development of metal carbodiimide compounds, allowing thermoanalytic control of reactions, including the detection of intermediate compounds and side phases. All these phases can be than be prepared and optimized in solid-state reactions (in fused silica tubes). This methodology is an excellent alternative to classical, explorative solid-state reactions. Tin carbodiimides and tin oxide carbodiimides developed within this project have shown some attractive physical properties that may be related to corresponding tin oxides with respect to semiconducting properties, but the potential of all our compounds is not yet fully explored. So far, we have undertaken structural characterizations by means of X-ray diffraction, as well as band structure calculations, analyses of bonding situations, phonon analysis, and analyses of the Sn2+ lone pair, using the Electron Localization Function (ELF), and optical measurements for the very distinct properties of the obtained compounds. When the carbodiimide ion is considered as a pseudo chalcogenide, we note the development of metal chalcogenides being almost under stagnation, the development of metal carbodiimides, however, is still an open field as has been demonstrated with the development of numerous tin carbodiimide compounds.

Publications

• Synthesis and thermoelastic properties of Zr(CN2)2 and Hf(CN2)2, Dalton Trans. 2018, 47, 10249–10255
  K. Dolabdjian, A. Kobald, C. P. Romao, H.-J. Meyer
  
• Tin(II) oxide carbodiimide and its relationship to SnO, Dalton Trans. 2018, 47, 13378–13383
  K. Dolabdjian, A. L. Görne, R. Dronskowski, M. Ströbele, H.-J. Meyer
  
• Lithium Ion Motion in Lithium Nitridoborate Chalcogenides Li5(BN2)Ch (Ch = Se, Te), Z. Anorg. Allg. Chem. 2019
  R. Schmidt, M. Ströbele, K. Eichele, H.-J. Meyer
  
• Synthesis and investigation into the structural, electronic and electrical properties of K2Pb(OCN)I3, Dalton Trans. 2019, 48, 13813–13819
  A. Siai, A. Oprea, M. Ströbele, H.-J. Meyer
  
• Synthesis, Structure, and Electronic Properties of Sn(CN2) and Sn4Cl2(CN2)3, Inorg. Chem. 2019, 58, 7845–7851
  M. Löber, K. Dolabdjian, M. Ströbele, C. P. Romao, H.-J. Meyer
  
• Synthesis, Structure, and Electronic Properties of Sn9O5Cl4(CN2)2, Inorg. Chem. 2019, 58, 14560–14567
  M. Löber, C. S. Geissenhoner, M. Ströbele, S. Indris, C. P. Romao, H.-J. Meyer
  
• Increased photocurrent of CuWO4 photoanodes by modification with the oxide carbodiimide Sn2O(NCN), Dalton Trans. 2020, 49, 3450-3456
  Z. Chen, M. Löber, A. Rokicińska, Z. Ma, J. Chen, P. Kuśtrowski, H.-J. Meyer, R. Dronskowski, A. Slabon
  
• Missing Carbodiimide and Oxide Carbodiimide of Scandium: Sc2(CN2)3 and Sc2O2(CN2), Z. Anorg. Allg. Chem. 2020, 646, 1281-1284
  P. Kallenbach, M. Ströbele, H.-J. Meyer
  
• Solid-State Preparation and Luminescence Investigation of Rare Earth Iodide Carbodiimide Nitrides RE2I(CN2)N (RE = La, Gd) and LaI(CN2), Eur. J. Inorg. Chem. 2020, 3954-3958
  D. Dutczak, A. Siai, M. Ströbele, D. Enseling, T. Jüstel, H.-J. Meyer
  
• Structure, polymorphism and luminescence of cyanate iodides MI(OCN) (M = Ba, Eu, and Sr), Dalton Trans. 2020, 49, 14133-14139
  A. Siai, L. Hämmerle, M. Ströbele, D. Enseling, T. Jüstel, H.-J. Meyer
  
• Synthesis and crystal structure of Pb14.66Sn7.34Br26(CN2)7O2, a complex member of group 14 carbodiimides, Z. Anorg. Allg. Chem. 2021, 647, 1973-1077
  M. Löber, K. Dolabdjian, M. Ströbele, C. P. Romao, H.-J. Meyer
  
• Synthesis, Structure and Electronic Properties of Three Tin Oxide Halides, Eur. J. Inorg. Chem. 2021, 283-288
  M. Löber, C. S. Geissenhöner, M. Ströbele, C. P. Romao, H.-J. Meyer