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A Dimeric Squarato‐Fluoroferrate(III)
Author(s) -
Leo Roland,
Massa Werner
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100273
Subject(s) - chemistry , denticity , crystallography , hydrogen bond , imidazole , crystal structure , ion , molecule , fluoride , stereochemistry , inorganic chemistry , organic chemistry
A first squarato‐fluoro complex of iron(III) could be prepared and characterised by single‐crystal X‐ray diffraction as (imidH) 2 [Fe 2 sq 2 F 4 (H 2 O) 2 ]·2H 2 O (imid = imidazole, sq = squarate(2‐) anion). Space group P $\bar{1}$ , Z = 1, a = 8.2174(8), b = 8.4306(9), c = 8.7860(9) Å, α = 63.864(9)°, β = 78.020(10)°, γ = 79.905(11)°, R 1 = 0.0264. The structure is built by dimeric [Fe 2 sq 2 F 4 (H 2 O) 2 ] 2– anions where the iron atoms are bridged by two fluoride ions and two squarate anions acting as bidentate ligands. Two additional fluoride ions and two aqua ligands are in trans ‐ terminal positions. These anions are implemented in a hydrogen bond network including the imidazolium cations and the free water molecules.