Synthesis and Structure of Heteroleptic Tm Bis(Formamidinate) Complexes

By the interaction of TmCl 3 with KFormDipp (FormDipp = N,N′-bis(2,6-diisopropylphenyl)-formamidinate) [Tm(FormDipp) 2 Cl(THF)] (1) and [KTm(FormDipp) 2 Cl 2 ] 2 (2) complexes are obtained. The reaction of 1 with potassium thiophenolate is studied. Its product is found to be [Tm(FormDipp) 2 (SPh)(THF)] complex (3). The structure of all prepared compounds is determined by single crystal X-ray diffraction of the following solid phases: 1a ( P -1) and 1b ( P 2 1 / n ) phases being two solvent-free polymorphs for complex 1 ; 2·0.5C 7 H 8 > and 3·C 7 H 8 phases containing solvate toluene molecules for complexes 2 and 3.