3D TROSY (H)CCH

Ref.:
A.Meissner, and O.W.Sørensen J.Magn.Reson. 144, 171-174 (2000). (Suppression of Diagonal Peaks in Three-Dimensional Protein NMR TROSY-Type HCCH Correlation Experiments)

A.Meissner, and O.W.Sørensen J.Magn.Reson. 139, 447-450 (1999). (Optimization of Three-Dimensional TROSY-Type HCCH NMR Correlation of Aromatic ¹H-¹³C Groups in Proteins)

Delays:  = (2J_CH)^-1; T = T' = (2n + 1)/4(J_CC)^-1; t^m/2 = {½(t2 + )}mod();  = gradient delay. The receiver reference phase is incremented by  at the discontinuities of t^m .

Phases for Varian Unity Inova:  = y;  = -x (echo) and  = x (antiecho).

Phases for Bruker DRX:  = x;  = x (echo) and  = -x (antiecho).

The dotted  pulse of the two-step (data coadded at constant receiver phase) S³ filter is combined with  = x and  = y when it is at its left and right positions, respectively.

For diagonal peak suppression the select flag must be set to 'a'

The resulting data set has to be processed States-TPPI in t₁ and echo / antiecho in t₂

Content
Pulse sequence:  hcch_trosy.c
Parameters:      hcch_trosy.par

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