A 31P and 199Hg nuclear magnetic resonance and vibrational spectroscopic study of phosphine complexes of Hg(ClO4)2

1984 ◽  
Vol 62 (3) ◽  
pp. 621-627 ◽  
Author(s):  
Tim Allman ◽  
Ram G. Goel
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Magnetic Resonance ◽  
Spectroscopic Study ◽  
Vibrational Spectroscopy ◽  
Low Frequency ◽  
Sample Concentration ◽  
Phosphine Complexes ◽  
Nuclear Magnetic

Cationic complexes of the type [Hg(phosphine)n](ClO4)2 (n = 2, 3, 4) (phosphine = P(t-Bu)3, PCy3, P(4-Me2NC6H4)3, P(4-MeOC6H4)3, P(4-MeC6H4)3, P(3-MeC6H4)3, P(2-MeC6H4)3, P(4-FC6H4)3, P(4-ClC6H4)3) have been prepared and studied by vibrational spectroscopy in the perchlorate and low frequency regions, as well as by 31P and 199Hg nmr. The skeletal Hg—P frequencies have been assigned in both solution and the solid state. It was found that 1J(Hg—P) decreases with increasing phosphine basicity and that it is also dependent upon sample concentration and temperature.

A 31P and 199Hg nuclear magnetic resonance and vibrational spectroscopic study of triarylphosphine complexes of HgCl2

1984 ◽  
Vol 62 (3) ◽  
pp. 615-620 ◽  
Author(s):  
Tim Allman ◽  
Ram G. Goel
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Spectroscopic Study ◽  
Vibrational Spectra ◽  
Dichloromethane Solution ◽  
Sample Concentration ◽  
Nmr Parameters ◽  
Tertiary Phosphines ◽  
Nuclear Magnetic

Complexes of the type [HgCl2P(4-XC6H4)3]2 and HgCl2(P(4-XC6H4)3)2 (X = Me2N, MeO, Me, H, F, Cl) have been prepared. The tertiary phosphines have similar steric requirements but vary greatly in their basicities. The vibrational spectra of the complexes were measured and each complex was found to have the expected bridging dimeric (1:1) or pseudotetrahedral monomeric (1:2 Hg/P) structure. Their 31P and 199Hg nmr parameters were investigated and it was found that 1J(Hg—P) increases with increasing phosphine basicity, decreasing temperature, and decreasing sample concentration in dichloromethane solution. It is concluded that changes in the hybridisation on the P and Hg atoms may be largely responsible for the increases of 1J(Hg—P) with increasing phosphine basicity.

scholarly journals Search for Axionlike Dark Matter Using Solid-State Nuclear Magnetic Resonance

2021 ◽  
Vol 126 (14) ◽  
Author(s):  
Deniz Aybas ◽  
Janos Adam ◽  
Emmy Blumenthal ◽  
Alexander V. Gramolin ◽  
Dorian Johnson ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Dark Matter ◽  
Solid State ◽  
Magnetic Resonance ◽  
Nuclear Magnetic
Sign in / Sign up

Export Citation Format

Share Document