Photochemical synthesis and identification of tetracarbonyl-bis(olefin)metal(0) complexes of group VI B elements
Küçük Resim Yok
Tarih
2000
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Verlag der Zeitschrift fur Naturforschung
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Photolysis of hexacarbonyl metal(0) or tetracarbonyl-bis(1,3-butadiene)metal(0) (metal: chromium, molybdenum, tungsten) in the presence of tetracyanoethylene, TCNE, or fumaronitrile , FN, at room temperature yields trans-bis(?2-tetracyano-ethylene)tetracarbonyl-chromium(0) (1), -molybdenum(0) (2), -tungsten(0) (3) and trans-bis(fumaronitrile)tetracarbonyl-chromium(0) (4), -tungsten(0) (5) complexes. The complexes were purified by chromatography and recrystallization and characterized by IR , 1H, 13C NMR and mass spectroscopies. It is shown that two tetracyanoethylene ligands are symmetrically bonded to the M(CO)4 moiety through their carbon-carbon double bond in the form of ?2-TCNE . The two fumaronitrile ligands are bonded to the central atom through their nitrogen atoms. The spectral data are discussed in terms of metal -? ligand ?-interaction.
Açıklama
Anahtar Kelimeler
Carbonyl, Fumaronitrile, Tetracyanoethylene
Kaynak
Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
55
Sayı
12
