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μ‐Oxo‐bis[(cyclopentadienyl)(η 1 ‐η 1 ‐1,1,2,3,4,4‐hexafluorbut‐2‐en‐1,4‐diyl)mangan(IV)] – Ein höher valenter Organometall‐Mangan‐Komplex
Author(s) -
Lentz Dieter,
Akkerman Floris,
Kickbusch Rainer,
Patzschke Mona
Publication year - 2004
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.200400152
Subject(s) - cyclopentadienyl complex , manganese , diene , chemistry , fluorine , medicinal chemistry , acceptor , crystallography , stereochemistry , catalysis , organic chemistry , natural rubber , physics , condensed matter physics
Photochemical substitution of two carbonyl ligands of tricarbonyl(η 5 ‐cyclopentadienyl)manganese by the butadienes, hexafluorobuta‐1,3‐diene ( 1a ), 1,1,2,4,4‐pentafluorobuta‐1,3‐diene ( 1b ), 1,1,4,4‐tetrafluorobuta‐1,3‐diene ( 1c ), 1,1,2‐trifluorobuta‐1,3‐ diene ( 1d ) und 1,1‐difluorobuta‐1,3‐diene ( 1e ) yields the correspond‐ ing half sandwich complexes carbonyl (η 4 ‐butadiene) (η 5 ‐cyclopentadienyl)manganese ( 2a‐e ), respectively. According to the IR spectrum of 2 a‐e , the π acceptor strength increases with the number of fluorine atoms within the ligands 1a‐e . 2a reacts with oxygen at ambient temperature forming μ‐oxo‐bis[(cyclopentadienyl)(η 1 ‐η 1 ‐1,1,2,3,4,4‐hexafluorobut‐2‐en‐1,4‐diyl)manganese(IV)] ( 3 ). The structures of 2a , 2c and 3 were elucidated by X‐ray crystallography demonstrating the difference in coordination of the butadiene ligands.

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