and is located within a binding pocket formed by the two helically distorted tetrapyrroles. Whereas the dichloromethane molecule is oriented within this pocket as a dipole with the positive end pointing towards the oxygen atom of the Fe–O–Fe subunit, the water molecule forms a hydrogen bond with this site, supported by additional weak interactions with adjacent N-donor atoms.
μ-Oxido-bis[(hexaethyldimethyl-2,2'-bidipyrrinato)iron(III)] (1) 在三斜晶系中结晶为混合
二氯甲烷/
水溶剂化物,为黑板,空间群 P\bar1} a = 14.536(3), b = 16.194(3), c = 25.883(5) A, α = 98.89(3)°, β = 91.28(3)°, γ = 90.56(3)°, Z = 2 . 在晶体结构中,两种不同的溶剂化物 1·
CH2Cl2 和 1·
H2O 以相等的比例存在。在这两种情况下,溶剂都位于 Fe-O-Fe 亚基附近,并位于由两个螺旋形扭曲的四
吡咯形成的结合袋内。而
二氯甲烷分子在这个口袋内作为偶极子取向,正端指向 Fe-O-Fe 亚基的氧原子,
水分子与该位点形成氢键,由与相邻 N-的额外弱相互作用支持供体原子。