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Fixation of Metallo Nitrile Ylides and Metallo Nitrile Imines as Ligands in Transition Metal Complexes [1]
Author(s) -
Völkl Alfons,
Achatz Dagobert,
Schoder Friedrich,
Zinner Gerhard,
Stolzenberg Heribert,
Beck Wolfgang,
Fehlhammer Wolf Peter
Publication year - 2010
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.200900531
Subject(s) - deprotonation , nitrile , chemistry , isocyanide , medicinal chemistry , transition metal , imine , metal , stereochemistry , catalysis , organic chemistry , ion
1,3‐Dipoles of the type metallo nitrile ylide and metallo nitrile imine were prepared by mono‐ α ‐deprotonation of CH‐acidic {[W(CO) 5 CHCH 2 PPh 3 ]PF 6 , M (CO) 5 CNCH 2 CO 2 R ( M = Cr, W; R = Me, Et), [Pt(Cl)(CNCH 2 CO 2 Et)(PPh 3 ) 2 ]BF 4 } and NH‐acidic isocyanide complexes (Cr(CO) 5 CNNH 2 ) and were stabilized by coordination to a second transition metal complex fragment {Cr(CO) 5 , [ M (CO) 5 ] + ( M = Mn, Re), [FeCp(CO) 2 ] + , [Pt(Cl)(P R 3 ) 2 ] + ( R = Et, Ph)}. All dinuclear products 1 – 7 , 10 , and 11 are neutral species except [(Ph 3 P) 2 (Cl)Pt{ μ 2 ‐CNCH(CO 2 Et)}Pt(Cl)(PPh 3 ) 2 ]BF 4 ( 8 ). Complex (OC) 5 W{ μ 2 ‐CNCH(CO 2 Et)}Pt(Cl)(PEt 3 ) 2 ( 5b ) was characterized by X‐ray diffraction. Twofold deprotonation/platination to give (OC) 5 Cr{ μ 3 ‐CNC(Ph)}[Pt(Cl)(PPh 3 ) 2 ] 2 ( 9 ) was achieved in the case of Cr(CO) 5 CNCH 2 Ph.