摘要:
Twelve diorganotin(IV) complexes of 2-quinaldate R2Sn(2-quin)(2) and R2SnCl(2-quin) have been synthesized by dealkyltion reactions of 2-quinaldic acid (2-quinH) with (R3Sn)(2)O (R = PhCH2 1, 2-C/C6H4CH2 2, 2-FC6H4CH2 3, 4-FC6H4CH, 4,4-CNC6H4CH2 5, Ph 6, 2,4-Cl2C6H3CH2 7) and R3SnCl (R = 2-ClC6H4CH2 8, 4-C/C6H4CH2 9, 2-FC6H4CH2 10, 4-FC6H4CH2 11, PhCH2 12), and all the complexes have been characterized by elemental analysis, IR and multinuclear NMR (H-1, C-13, Sn-119) spectroscopies. The structures of (4-FC6H4CH2)(2)Sn(2-quin)(2)(.)2CH(3)CN (4) and {[(2-C/C6H4CH2)(2)Sn(2-quin)C l](2) (.) CH3OH}(n) (8) have been determined by X-ray diffraction. Studies show that complex 4 is a monomer with the central tin atom six-coordinated in a skew-trapezoidal-bipyramidal geometry and complex 8 is a one-dimensional polymer with the tin atom six-coordinated. Studies also show that the nitrogen atoms of the 2-quin ligand are coordinating to the tin atoms for all of the 12 complexes. (c) 2005 Elsevier B.V. All rights reserved.