Taking the Concept of Frustrated Lewis Pairs beyond Main Group Systems
Inorganic Molecular Chemistry - Synthesis and Characterisation
Final Report Abstract
Within the time of the scholarship funded by the DFG the aim was to extend the scope of LEWIS acids in Frustrated LEWIS Pairs towards metals. Isolobal to the known CpR2 group 4 cationic complexes it was sought to synthesise bis(imido) cationic molybdenum complexes with a pending nitrogen or phosphorus based LEWIS base. The neutral monochloro complexes were prepared, the generation of the cationic complex is still topic of ongoing research. Furthermore, the successful syntheses of novel air-sensitive yttrocene and permethylyttrocene complexes with a pendant phosphane or guanidinate LEWIS base were achieved. The reactivity of the Y/N and Y/P LEWIS acid/base pairs towards various small molecules has been investigated. To vary the LEWIS basicity in the parent Zr/P Frustrated LEWIS pairs and therefore investigate its influence on the reaction behaviour, a new synthetic route to ortho-P-substituted phenols was developed. The Pd-coupling synthesis based on work by Stelzer et al. (1998) was optimized for phosphanes bearing electron withdrawing substituents.
Publications
- 248th ACS National Meeting (10.-14.8.2014, San Francisco, USA) “Frustrated LEWIS Pairs Based on Early Transition Metals”
Annika Stute
