Multiplet structure in real cosine fourier-transformed zero-quantum spectra without axial peaks

1992 ◽  
Vol 98 (2) ◽  
pp. 421-427
Author(s):  
Siggi Mronga ◽  
Jochen Balbach
Keyword(s):  
Multiplet Structure ◽  
Quantum Spectra

High pressure effects on the multiplet structure of the emission spectrum of coronene in a n‐alkane matrix

1977 ◽  
Vol 66 (2) ◽  
pp. 875-876 ◽  
Author(s):  
M. Lamotte ◽  
S. Risemberg ◽  
A. M. Merle ◽  
J. Joussot‐Dubien
Keyword(s):  
High Pressure ◽  
Emission Spectrum ◽  
Pressure Effects ◽  
Multiplet Structure ◽  
High Pressure Effects

Multiplet structure in theL2,3x-ray-absorption spectra: A fingerprint for high- and low-spinNi2+compounds

1988 ◽  
Vol 37 (11) ◽  
pp. 6587-6589 ◽  
Author(s):  
G. van der Laan ◽  
B. T. Thole ◽  
G. A. Sawatzky ◽  
M. Verdaguer
Keyword(s):  
Absorption Spectra ◽  
Multiplet Structure

scholarly journals Boosting the resolution of multidimensional NMR spectra by complete removal of proton spin multiplicities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Peyman Sakhaii ◽  
Bojan Bohorc ◽  
Uwe Schliedermann ◽  
Wolfgang Bermel
Keyword(s):  
Quantum Coherence ◽  
Structural Connectivity ◽  
Complete Removal ◽  
Proton Spin ◽  
Multidimensional Nmr ◽  
Random Delay ◽  
Multiplet Structure ◽  
Phase Sensitive ◽  
Indispensable Tool ◽  
Doublet Splitting

AbstractOver decades multidimensional NMR spectroscopy has become an indispensable tool for structure elucidation of natural products, peptides and medium sized to large proteins. Heteronuclear single quantum coherence (HSQC) spectroscopy is one of the work horses in that field often used to map structural connectivity between protons and carbons or other hetero nuclei. In overcrowded HSQC spectra, proton multiplet structures of cross peaks set a limit to the power of resolution and make a straightforward assignment difficult. In this work, we provide a solution to improve these penalties by completely removing the proton spin multiplet structure of HSQC cross peaks. Previously reported sideband artefacts are diminished leading to HSQC spectra with singlet responses for all types of proton multiplicities. For sideband suppression, the idea of restricted random delay (RRD) in chunk interrupted data acquisition is introduced and exemplified. The problem of irreducible residual doublet splitting of diastereotopic CH2 groups is simply solved by using a phase sensitive JRES approach in conjunction with echo processing and real time broadband homodecoupling (BBHD) HSQC, applied as a 3D experiment. Advantages and limitations of the method is presented and discussed.

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