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Synthesis, Structure, and Reactivity of a Diphosphadiferratetrahedrane with a Fe−Fe Double Bond
Author(s) -
Eichhorn Christine,
Scherer Otto J.,
Sögding Thorsten,
Wolmershäuser Gotthelf
Publication year - 2001
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20010803)40:15<2859::aid-anie2859>3.0.co;2-k
Subject(s) - chemistry , yield (engineering) , thermal decomposition , double bond , reactivity (psychology) , ring (chemistry) , crystallography , molecule , stereochemistry , polymer chemistry , physics , organic chemistry , medicine , alternative medicine , pathology , thermodynamics
The short thermolysis of the butterfly molecule [{Cp′′′(OC) 2 Fe} 2 P 4 ] affords, besides [Cp′′′FeP 5 ] and [{Cp′′′Fe} 2 P 4 ], the diphosphadiferratetrahedrane [{Cp′′′Fe} 2 ( μ ‐CO)( μ ‐ η 2 : η 2 ‐P 2 )] with a Fe−Fe double bond in 18 % yield. The P 2 building block was split photochemically into two μ ‐P ligands with elimination of CO. In the resulting dinuclear complex 1 , the 31 P NMR signal is shifted to extremely low field ( δ =1406.9), and the rhombic Fe 2 P 2 four‐membered ring is almost orthogonal to the eclipsed Cp′′′ five‐membered rings (see picture); Cp′′′= t Bu 3 C 5 H 2 .