Pyridylmethylamines as ligands in iron halide complexes -: Coordination behaviour depending on the halide, the denticity of the amino ligand and the oxidation state of iron

被引：28

作者：

Malassa, Astrid ^{[1
]}

Goerls, Helmar ^{[1
]}

Buchholz, Axel ^{[1
]}

Plass, Winfried ^{[1
]}

Westerhausen, Matthias ^{[1
]}

机构：

[1] Univ Jena, Inst Anorgan & Analyt Chem, D-07743 Jena, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2006年 / 632卷 / 14期

关键词：

iron; pyridyl complexes; amino complexes; pyridylmethylamines;

D O I：

10.1002/zaac.200600200

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

2-Pyridylmethylamine (amp) and 8-aminochinoline (ach) readily form the following complexes with iron halides in methanol: [(amp)(2)FeCl2] (1a), [(amp)(2)FeBr2] (1b), [(ach)(2)Fe(MeOH)(2)]Br-2 (1c), and [(amp)FeCl2(mu-OMe)](2) (2). Methanol was chosen as a solvent because these reactions are rather complex in ether. For example, FeCl3 forms the ionic complex pair [(dme)(2)FeCl2] [FeCl4] (3) with 1,2-dimethoxyethane (dme). The reaction of FeBr2 with tridentate di(2-pyridylmethyl)amine (dpa) and tetradentate 1,2-dipyridyl-1,2diaminoethane (dpdae) yields the complexes [(dpa)2Fe]Br-2 center dot 2 MeOH (4) and [(dpdae)(2)Fe] [FeBr4] (5), respectively. Crystallo-graphic and magnetochemical investigations show the high-spin configuration for the complexes I and 2, whereas the short Fe-N distances of 4 clearly indicate a low-spin state. Compound 2 exhibits an antiferromagnetic exchange interaction with a coupling constant J = -29.4 cm(-1) (H;af = -J S;af(A)center dot S;af(B)).

引用

页码：2355 / 2362

页数：8

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