Metal complexes of a new polyimido sulfur phosphanyl ligand

by Elena Carl
Doctoral thesis
Date of Examination:2014-06-27
Date of issue:2015-02-10
Advisor:Prof. Dr. Dietmar Stalke
Referee:Prof. Dr. Dietmar Stalke
Referee:Prof. Dr. Lutz Ackermann
Persistent Address: http://dx.doi.org/10.53846/goediss-4907

 

 

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Abstract

English

Within this thesis, a new synthetic access to diverse metal complexes of polyimido sulfur phosphanyl ligands was developed. The coordination behaviour of either the lithiated ligand [(tmeda)Li{(NtBu)3SCH2PPh2}] (1) or the protonated ligand Ph2PCH2S(NtBu)2NHtBu (13) with metal halides was investigated. An effective synthetic route was found to synthesise first row transition metal and main group metal halide complexes by transmetalation reactions with metal halides starting from 1. It could be shown that the ligand coordinates the transition metals Mn2+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+ in a bidentate fashion and that a tripodal N,N,N– or N,N,P– coordination is excluded due to steric hindrance. Main group metal halide complexes of germanium(II) and tin(II) could be obtained, displaying a monomeric coordination motif. Employment of the P–donor functionality in coordination was achieved by using the amine ligand Ph2PCH2S(NtBu)2NHtBu (13) in combination with soft metal centres like ruthenium(II) and rhodium(II).
Keywords: polyimido sulfur phsophanyl ligands, Janus Head ligands, sulfur triimide
 
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