Synthese und Koordinationsverhalten von (Ph3SnO)3As. Die Kristallstrukturen von (Ph3SnO)3As und [{(Ph3SnO)3As}Fe(CO)4] |
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Authors: | Tobias Herntrich Kurt Merzweiler Prof Dr |
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Institution: | Halle, Institut für Chemie der Martin‐Luther‐Universit?t Halle‐Wittenberg |
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Abstract: | Synthesis and Coordination Behaviour of (Ph3SnO)3As. The Crystal Structures of (Ph3SnO)3As and {(Ph3SnO)3As}Fe(CO)4] (Ph3SnO)3As ( 1 ) was obtained from the reaction of Ph3SnOH with As2O3 in a dichloromethane/water mixture as solvent. Upon recrystallization from DMF 1 forms orthorhombic crystals, space group P212121, with a = 977.3(2), b = 1903.5(3) and c = 2600.9(5) pm (at 220 K). In 1 the As atom is bound to three OSnPh3 groups with As–O distances of 171.9(3)–174.9(3) pm. Reaction of 1 with Fe2(CO)9 gives {(Ph3SnO)3As}Fe(CO)4] ( 2 ). 2 crystallizes monoclinic, space group P21/n with a = 2242.3(5), b = 1112.6(2), c = 2353.0(5) pm and β = 111,46(2)° (at 220 K). In 2 the iron atom exhibits a trigonal bipyramidal coordination with the (Ph3SnO)3As ligand in an axial position. The Fe–As bond length is 230.5(1) pm. |
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Keywords: | Arsenic Tin Iron Crystal structure |
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