Heteronuclear single quantum coherence spectroscopy

Heteronuclear multiple-quantum correlation Experiment for tailored correlation spectroscopy of H and H resonances in peptides and proteins Homonuclear Hartmann-Hahn spectroscopy Heteronuclear quadruple-quantum coherence Heteronuelear triple-quantum coherence Heteronuclear single-quantum coherence TOCSY sequences developed at the Indian Institute of Chemical Technology Insensitive nucleus enhancement by polarization transfer... 

Further 2-D H total correlation spectroscopy (TOCSY) anal3rsis of fire humate from the cellulose treatment indicates that this region is rich in aCH and CH2 of amino acid residues phis CH/CH2 of polysaccharides (Figure 6). These assignments were made based on the proton covalent connectivity and chemical shift information acquired from the TOCSY spectrum, and are in agreement with the 2-D heteronuclear single quantum coherence (HSQC) analysis... 

Similarly, PPI dendrimers have shifts that are very similar for each repetitive layer, and to completely assign these strac-tures more complex methods such as 2D-NOESY (two-dimensional nuclear Overhauser enhancement spectroscopy) and 3D-NOESY-HSQC (HSQC, heteronuclear single quantum coherence) have been used. These methods will be discussed in the following. ... 

FIGURE 8.2. Flowchart for structure elucidation of purified compounds. DEPT Distortionless Enhancement by Polarization Transfer, HMBC Heteronuclear Multiple Bond Correlation, HSQC Heteronuclear Single Quantum Coherence, HMQC Heteronuclear Multiple Quantum Correlation, DQF-CQSY Double Quantum Filtered Correlated Spectroscopy and NOSEY Nuclear Overhauser effect spectroscopy. 

FAAS flame atomic absorption spectroscopy HSQC heteronuclear single quantum coherence... 

The HSQC (heteronuclear single-quantum coherence) pulse sequence is an important tool in heteronuclear and H- C NMR spectroscopy,... 

DFT = density functional theory HMQC = heteronuclear multiple quantum coherence SOMO = singly occupied molecular orbital PES = photoelectron spectroscopy Cl = configuration interaction LUMO = lowest unoccupied molecular orbital HOMO = highest occupied molecular orbital TLC = thin layer chromatography. 

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