919509-31-2Relevant academic research and scientific papers
Synthesis of new titanatranes containing organic substituents in the atrane fragment
Zaitsev,Karlov,Zabalov,Churakov,Zaitseva,Lemenovskii
, p. 2831 - 2840 (2007/10/03)
Titanatrane CpTi(OCH(CH3)CH2)3N (3) was prepared by the reaction of CpTiCl3 with N(CH2CH(CH 3)OH)3 in the presence of triethylamine. The reaction of CpTi(OMe)3 (8) with N(CH2CH2OH) 2(CH2CHPhOH), erythro-N(CH2CH 2OH)2(CHPhCHPhOH), and N(CH2CH 2OH)2(CH2CPh2OH) gave cyclopentadienyltitanatranes 12-14. Compound 8 reacts with threo-N(CH 2CH2OH)2(CHPhCHPhOH) to give a mixture of threo-CpTi(OCH2CH2)2(OCHPhCHPh)N and threo-MeOTi(OCH2CH2)2(OCHPhCHPh)N. Slow hydrolysis of the latter product gave threo-[Ti3O(OMe){(OCH 2CH2)2- (OCHPhCHPh)N} 3] 2, which was studied by X-ray diffraction analysis. The crystal structures of 3 and 12 were also determined by X-ray diffraction analysis. The titanium coordination polyhedron in these complexes is a distorted trigonal bipyramid in which the equatorial positions are occupied by three oxygen atoms and the axial positions contain the N atom and the Cp group. The titanium-nitrogen distances (2.313(2), 2.291(2) A in two independent molecules of 3 and 2.271(2) A in compound 12) confirm the presence of Ti←N transannular interaction.
