Synthesis and spectroscopic characterization of five-coordinate aluminium complexes

Department of Chemistry, University of Rajasthan, Jaipur-302 004, Rajasthan, India

E-mail : anirudhsinghunivjpr@yahoo.co.in

Manuscript received 23 December 2005, accepted 24 April 2006

Complexes of the types Al(L){(OCH₂CH₂)NMe(CHzCHzOH)} (where L = OC₆H₄CH=NCHzCHzO (L ¹) 1; L= OC₁₀H₆CH=NCH₂CH₂O (L²) 2) and AI{(OCH₂CH₂)₂NMe}(LH) (where L = L1 3, L = L1 4) have been prepared by the reactions of AI(L)(OI'r') with MeN(CHzCHzOH)z and AI((OCHzCHz)zNMe}(OPr^I) with LHz in 1 :1 molar ratio, respectively. These complexes 1, 2 and 3 react in I : 1 molar ratio with Bu₃Sn(OPr^I) to yield heterometallic complexes 5, 6 and 7, respectively. Derivatives 1, 2 and 4 al~o react with Me₃SiCI in the presence of Et₃N to produce, respectively heteronuclear complexes 8, 9 and 10. All of these derivatives have been characterized by elemental analyses, molecular weight measurements and spectroscopic (IR. NMR, ¹H, ²⁷AI, ²⁹Si and ¹¹⁹Sn) studies.