1370641-63-6Relevant academic research and scientific papers
Reactivity of lithium n-butyl amidinates towards group 14 metal(ii) chlorides providing series of hetero- and homoleptic tetrylenes
Chlupaty, Tomas,Padelkova, Zdeka,Lyka, Antonin,Brus, Jii,Ruika, Ales
, p. 5010 - 5019 (2012)
The new class of homo- and heteroleptic n-butyl-N,N′-disubstituted amidinato group 14 metal(ii) complexes were prepared by salt elimination from starting lithium amidinates and metal(ii) chlorides both in stoichiometric ratio 2:1 and 1:1, respectively. The target amidinates contain less bulky isopropyl or cyclohexyl as well as a sterically demanding aromatic substituent. Desired 1:1 Pb(ii) complexes are not accessible by the described procedure. Ligand transfer from Pb to Sn is taking place if homoleptic Pb(ii) compounds are reacted with SnCl2. Prepared tetrylenes were characterized by 1H, 13C, 119Sn and 207Pb NMR spectroscopy in C6D6 or THF-d8. X-Ray diffraction studies of one heteroleptic Ge(ii) monomeric where the coordination polyhedron of the three coordinated germanium atoms is a trigonal pyramid, two different dimeric structures of heteroleptic Sn(ii) complexes, one amidine hydroiodide byproduct and the oxidation product of the heteroleptic chloro Sn(ii) amidinate as a tetranuclear species with two Sn(iv) and two Sn(ii) atoms in central Sn2O2 planar ring were performed on appropriate single crystals. The dimer of one of the heteroleptic stannylenes reveals a new type of monomeric units connection, weak Sn-Cl contact and an interaction of the tin atom with delocalized N-C(C)-N system of the amidinato ligand of the second molecule. The Royal Society of Chemistry 2012.
