Synthesis, crystal structures and magnetic characterization of four β-diketonate-alkoxide iron(III) dimers. Dependence of the magnetic properties on geometrical and electronic parameters
作者:Florence Le Gall、Fabrizia Fabrizi de Biani、Andrea Caneschi、Patrizia Cinelli、Andrea Cornia、Antonio C Fabretti、Dante Gatteschi
DOI:10.1016/s0020-1693(97)05482-0
日期:1997.10
63(1), γ=71.65(1)°, Z=2. Compound 3 crystallizes in the monoclinic system, space group P21/c (No. 14), a=11.546(2), b=18.539(1), c=13.595(2) A, β=113.18(1)°, Z=2. Compound 4 crystallizes in the monoclinic system, P21/c (No. 14) space group, a=13.746(2), b=18.933(2), c=14.158(2) A, β=117.37(1)°, Z=2. Each complex consists of two iron(III) ions that are symmetrically bridged by two alkoxide groups. The antiferromagnetic
摘要双核铁(III)配合物[Fe(OMe)(dbm)2] 2(1),[Fe(OMe)(dpm)2] 2(2),[Fe(OEt) )(bpm)2] 2(3)和[Fe(OProp)(npm)2] 2(4)被报道。配合物1和2分别具有对称的β-二酮酸酯配体dbm(二苯甲酰甲烷酸酯)和dpm(二甲戊酰基甲烷酸酯),而配合物3和4分别包含不对称的β-二酮酸酯配体bpm(苯甲酰基新戊酰甲酸酯)和npm(萘甲酰基新戊酰甲酸酯)。配合物1在三斜晶系系统中结晶,空间群P 1(2),a = 9.634(1),b = 10.946(2),c = 13.079(1)A,α= 79.95(1),β= 88.01 (1),γ= 82.57(1)°,Z = 1。配合物2在三斜晶系系统中结晶,空间群P 1(2),a = 10.980(2),b = 14.255(2),c = 17.979(1)A,α= 85.70(1),β=