Derivatives of the hypho class of boron hydrides. I. The molecular structure and nuclear magnetic resonance spectra of stereochemically nonrigid bis(trimethylphosphine)hexaborane(10)

1976 ◽  
Vol 98 (2) ◽  
pp. 449-453 ◽  
Author(s):  
Margaret Mangion ◽  
R. K. Hertz ◽  
M. L. Denniston ◽  
J. R. Long ◽  
W. R. Clayton ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Boron Hydrides ◽  
Nuclear Magnetic Resonance Spectra ◽  
Derivatives Of ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

Carbonyl nitrosyl halide complexes of molybdenum and tungsten. II. Triarylphosphine and arsine complexes of tungsten

1973 ◽  
Vol 26 (7) ◽  
pp. 1487 ◽  
Author(s):  
R Colton ◽  
CJ Commons
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nuclear Magnetic Resonance Spectra ◽  
Halide Complexes ◽  
Trans Complex ◽  
Derivatives Of ◽  
And Tungsten ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

Triphenylphosphine and triphenylarsine derivatives of W(CO)4(NO)X (X = Cl, Br, I) have been prepared. These compounds have the form mer- W(CO)3(NO)LX, cis-W(CO)2(NO)L2X, and trans-W(CO)2(NO)(PPh3)2X. A trans complex with triphenylarsine could not be prepared. Further substitution with either ligand was not achieved. In addition, the tri(ortho-, meta-, and para-)tolylphosphine and arsine complexes of W(CO)4(NO)I have been isolated. Their nuclear magnetic resonance spectra indicate interaction between neighbouring ligands in some cases, and suggest that possible rotation about the metal-phosphorus and arsenic bonds may occur in these compounds.

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