Mononuclear barium and dinuclear copper(II) complexes of a 24-membered bibracchial tetraimine Schiff-base macrocycle derived from N,N-bis(2-aminoethyl)-2-methoxyethylamine
作者:Neil A. Bailey、David E. Fenton、Paul C. Hellier、Paul D. Hempstead、Umberto Casellato、P. Alessandro Vigato
DOI:10.1039/dt9920002809
日期:——
cyclocondensation of 2,6-diacetylpyridine and N,N-bis(2-aminoethyl)-2-methoxyethylamine [monoclinic, space group P2/n(no. 13), a= 27.494(20), b= 14.120(13), c= 21.024(14)Å, β= 91.68(57)°, Z= 8] confirms that the macrocycle folds to present a molecular cleft within which the metal is co-ordinated. Transmetallation with CuII gives a homodinuclear copper(II) complex the crystal structure of which [monoclinic
由2,6-二乙酰基吡啶与N,N-双(2-氨基乙基)-2-甲氧基乙胺[单斜,空间群P 2的环缩合而得的双臂四亚胺席夫碱大环的单核钡配合物的X射线结构。/ n(第13号),a = 27.494(20),b = 14.120(13),c = 21.024(14)Å,β= 91.68(57)°,Z = 8]证实大环折叠呈现a金属在其中进行配位的分子裂隙。用Cu II进行金属转移可得到同核的铜(II)配合物,该配合物的晶体结构为[单斜,空间群P 2 1/ c,a = 14.807(6),b = 9.558(4),c = 17.432(8)Å,β= 113.89(5)°,Z = 2]表明铜(II)原子被'在大循环的“头”单元中,出现了裂口。