作者:Kevin Mason、Ian A. Gass、Simon Parsons、Anna Collins、Fraser J. White、Alexandra M. Z. Slawin、Euan K. Brechin、Peter A. Tasker
DOI:10.1039/b924143d
日期:——
The syntheses, structures and magnetic properties of nine new iron complexes containing salicylaldoxime (saoH2) or derivatised salicylaldoximes (R-saoH2), [Fe3O(OMe)(Ph-sao)2 Cl2(py)3]·2MeOH (1·2MeOH), [Fe3O(OMe)(Ph-sao)2Br2(py)3]·Et2O (2·Et2O), [Fe4(Ph-sao)4F4(py)4]·1.5MeOH (3·1.5MeOH), [Fe6O2(OH)2(Et-sao)2(Et-saoH)2(O2CPh)6] (4), [HNEt3]2[Fe6O2(OH)2(Et-sao)4(O2CPh(Me)2)6]·2MeCN (5·2MeCN), [Fe6O2(O2CPh)10(3-tBut-5-NO2-sao)2(H2O)2]·2MeCN (6·2MeCN), [Fe6O2(O2CCH2Ph)10(3-tBut-sao)2(H2O)2]·5MeCN (7·5MeCN), [Fe6Na3O(OH)4(Me-sao)6(OMe)3(H2O)3(MeOH)6]·MeOH}n (8·MeOH) and [HNEt3]2[Fe12Na4O2(OH)8(sao)12(OMe)6(MeOH)10] (9) are discussed. The predominant building block appears to be the triangular [Fe3O(R-sao)3]+ species which can self-assemble into more elaborate arrays depending on reaction conditions. An interesting observation is that the R-saoH−/R-sao2− ligand system tends to adopt coordination modes similar to carboxylates. The most unusual molecule is the [Fe4F4] molecular square, 3. While Cl− and Br− appear to act only as terminal ligands, the F− ions bridge making a telling impact on molecular structure and topology.
含有水杨醛肟(saoH2)或衍生化水杨醛肟(R-saoH2)、[Fe3O(OMe)(Ph-sao)2 Cl2(py)3]-2MeOH(1-2MeOH)、[Fe3O(OMe)(Ph-sao)2Br2(py)3]-Et2O(2-Et2O)、[Fe4(Ph-sao)4F4(py)4]-1.5MeOH(3-1.5MeOH)、[Fe6O2(OH)2(Et-sao)2(Et-saoH)2(O2CPh)6](4)、[HNEt3]2[Fe6O2(OH)2(Et-sao)4(O2CPh(Me)2)6]-2MeCN(5-2MeCN)、[Fe6O2(O2CPh)10(3-tBut-5-NO2-sao)2(H2O)2]-2MeCN(6-2MeCN)、讨论了[Fe6O2(O2CCH2Ph)10(3-tBut-sao)2(H2O)2]-5MeCN (7-5MeCN)、[Fe6Na3O(OH)4(Me-sao)6(OMe)3(H2O)3(MeOH)6]-MeOH}n (8-MeOH) 和 [HNEt3]2[Fe12Na4O2(OH)8(sao)12(OMe)6(MeOH)10] (9)。主要的结构单元似乎是三角形的[Fe3O(R-sao)3]+,根据反应条件的不同,它可以自组装成更复杂的阵列。一个有趣的现象是,R-saoH-/R-sao2-配体系统倾向于采用类似于羧酸盐的配位模式。最不寻常的分子是[Fe4F4]分子方阵 3。虽然 Cl- 和 Br- 似乎只充当终端配体,但 F- 离子桥对分子结构和拓扑结构产生了明显的影响。