Ring reversal, sulphur inversion, and 1,3-metal shifts in sulphur-containing six-membered-ring complexes of chromium and tungsten carbonyls

1981 ◽  
pp. 1944 ◽  
Author(s):  
Edward W. Abel ◽  
Martin Booth ◽  
Keith G. Orrell ◽  
Graham M. Pring
Keyword(s):  
Membered Ring ◽  
Ring Complexes ◽  
Tungsten Carbonyls ◽  
And Tungsten

scholarly journals Carbonylniobium Chemistry, IV Derivatives of η5 -C5H5Nb(CO)4 with Tridentate Phosphines

1983 ◽  
Vol 38 (4) ◽  
pp. 446-448 ◽  
Author(s):  
Martin Hoch ◽  
Dieter Rehder
Keyword(s):  
Nmr Spectra ◽  
Membered Ring ◽  
Vanadium Complexes ◽  
Ring Complexes ◽  
Derivatives Of ◽  
Induced Reaction

Abstract The photo-induced reaction between CpNb(CO)4 and Ph2P(CH2)2PR(CH2)2PPh2 (L; R = Ph, Cy) yields the chelated five-membered ring complexes cis-[CpNb(CO)2L] (two isomers in the case of R = Cy). The uncordinated PPh2 group reacts with CpNb(CO)3THF to form CpNb(CO)2(μ-L)CpNb(CO)3. IR, 31P and 93Nb NMR spectra are discussed and compared with corresponding data of the analogous vanadium complexes.

Palladium(II) Complexes with Dithiomalonamide and N,N′-Diphenyldithiomalonamide

1974 ◽  
Vol 52 (20) ◽  
pp. 3454-3458 ◽  
Author(s):  
Gian Carlo Pellacani
Keyword(s):  
Electronic Spectra ◽  
Bidentate Ligand ◽  
Membered Ring ◽  
Orbital Parameters ◽  
Square Planar ◽  
Anionic Ligands ◽  
Ligand Coordination ◽  
Ring Complexes ◽  
Square Planar Complexes ◽  
Spectrochemical Series

Dithiomalonamide (Hdtma) and N,N′-diphenyldithiomalonamide (Hdpma) form diamagnetic square-planar complexes PdL2 and PdL2•2DMF. For these complexes a [PdS4] coordination was suggested by their electronic and i.r. spectra. The splitting orbital parameters, Δ1, indicates that these anionic ligands assume an intermediate position in the spectrochemical series of sulfur donors. These ligands also form Pd(HL)2X2 (X = Cl, Br, I, ClO4) and PdHLX2 (X = Cl, Br, I) complexes in which spectroscopic evidence suggests an S,N bidentate ligand coordination, forming six-membered rings. ν(PdN) and ν(PdS) are tentatively assigned. For Pd(Hdpma)2X2 complexes from the far i.r. and electronic spectra we propose a cis-PdN2S2 configuration. The Δ1 parameters in the six-membered ring Pd(HL)2X2 complexes indicate a ligand strength greater than in the analogous S,N coordinated five-membered ring complexes of dithiooxamides and show an inversion of the order found in Ni(HL)2X2 (HL = Hdtma, Hdpma) complexes. In PdHLX2 complexes the presence of two bands assignable to Vasym(PdX) and Vsym(PdX) supports a cis-halogen configuration.

Organic cyanate, thiocyanate, and selenocyanate complexes of chromium and tungsten carbonyls

1976 ◽  
Vol 15 (1) ◽  
pp. 160-164 ◽  
Author(s):  
Michael H. Quick ◽  
Robert J. Angelici
Keyword(s):  
Tungsten Carbonyls ◽  
And Tungsten

Cis-1,4-cyclohexadienebisepisulphide complexes of chromium, molybdenum and tungsten carbonyls: the x-ray crystal structure of

Polyhedron ◽  
1989 ◽  
Vol 8 (7) ◽  
pp. 887-891 ◽  
Author(s):  
Edward W. Abel ◽  
Neil A. Cooley ◽  
Kenneth Kite ◽  
Keith G. Orrell ◽  
Vladimir Šik ◽  
...  
Keyword(s):  
Crystal Structure ◽  
X Ray ◽  
Tungsten Carbonyls ◽  
And Tungsten
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