355806-73-4Relevant academic research and scientific papers
Synthesis and catalytic properties of oxalic amidinato complexes
Chen,Rees,Cowley,Green
, p. 1761 - 1767 (2001)
The oxalic amidine compounds C6H5N=C(NHtBu)-C(NHtBu)=NC 6H5 1 and C6H5N=C{N(tBu)(SiMe3)}- C{N(tBu)(SiMe3)}=NC6H5 2 are described. The compound [(C6H5N)C(NHtBu)-C(NHtBu)(NHC 6H5)][Br] 3* has been isolated from the reaction between 1 and [NiBr2(DME)]. Treatment of 1 with M(NMe2)4 (M =Zr or Ti), [Ta(NEt2)2Cl3(py)] or [Zr{N(SiMe3)2}3Cl] gives the bimetallic complexes [M(NMe2)3(C6 H5N)C(NtBu)-]2 (M =Zr (4) or M =Ti (5)) and the mono-amidinato complexes [Ta(NEt2)Cl3{(C6 H5N)C(NtBu)C(HNtBu)(NC6H 5)}] 6* and [Zr{N(SiMe3)2}2Cl{(C6H 5N)C(NtBu)C(HNtBu)(NC6H 5)}] 7* respectively: * indicates the crystal structure has been determined. The activity toward ethylene polymerisation has been investigated for compounds 4, 5 and 7.
