Since non-phase cycling is applied to the PC7 excitation pulse, four-phase cycling is applied to the detection pulse P1 for selecting the 0Q -> -1Q coherence order jump, and four-phase cycling is applied to the PC7 reconversion pulse for filtering DQ coherences.
2*del360 = τ1 + τ4 + τ3
;pc72dlsw (TopSpin 2.0) ;SQ-DQ experiment using POST_C7 sequence ;for setup use pc71d ;M. Hong ... ;Hohwy, M. Jakobsen, H.J. Eden, M. Levitt, M.H., Nielsen, N.C., ;J. Chem. Phys. 108, 2686-2694 (1998) ;revised 11/19/03 JOS ;Avance II+ version ;parameters: ;d1 : recycle delay ;d0 : incremented delay (2D) [3 usec] ;d20 : delay between saturation pulses ;pl1 : f1 power level for presaturation pulses and detection pulse ;pl7 : for POST C7 recoupling sequence, B1=7*cnst31 in Hz ;p1 : detection pulse at pl1 ;cnst31 : spinning speed ;l0 : number of composite C7 cycles for DQ excitation ;l1 : number of composite C7 cycles for DQ reconversion ;l2 : number of 2/7 rotor revolutions for DQ evolution ;l3 : number of 2/7 rotor revolution increments for DQ evolution ;l20: # of pulses in saturation pulse train, 0 if undesired ;inf1: =l3*(2s/cnst31)/7, t1 increment ;FnMode : undefined ;mc2 : STATES-TPPI ;ns : 16*n ;WDW : F1 QSINE 3, F2 QSINE 2 or EM ;$COMMENT=SQ-DQ experiment with post-C7 sequence, optimised for large sweep width ;$CLASS=Solids ;$DIM=2D ;$TYPE=direct excitation ;$SUBTYPE=homonuclear correlation ;$OWNER=Bruker define loopcounter count ;for STATES-TPPI procedure "count=td1/2" ;and STATES cos/sin procedure define pulse tau1 "tau1=((0.25s/cnst31)/7)" ; 90° pulse define pulse tau4 "tau4=((1s/cnst31)/7)" ;360° pulse define pulse tau3 "tau3=((0.75s/cnst31)/7)" ;270° pulse define delay del360 "del360=(1s/cnst31)/7" "d31=1s/cnst31" "inf1=l3*(2s/cnst31)/7" "l2=0" ;cnst11 : to adjust t=0 for acquisition, if digmod = baseopt "acqt0=1u*cnst11" #include <rot_prot.incl> #include <Avancesolids.incl> ze ;acquire into a cleared memory 1 d31 #ifdef presat ;set with -Dpresat pres, d20 ;delay between saturation pulses (p1 pl1 ph1):f1 ;saturation loop if required lo to pres times l20 #endif /* presat */ 2 d1 1m rpp11 ;reset the phase program ph11 pointer to the first element 1m rpp12 ;reset the phase program ph12 pointer to the first element 1m rpp13 ;reset the phase program ph13 pointer to the first element 1m rpp14 ;reset the phase program ph14 pointer to the first element 3 tau1:f1 pl7:f1 ph11 ipp13 ipp14 ;c7 excitation, 1 loop = 2*Tr/7, ;increment reconversion pulse phase ph13 and ph14 pointers ;to the next phase in the lists tau4:f1 ph12 ipp12 ;increment phase ph12 pointer tau3:f1 ph11 ipp11 ;increment phase ph11 pointer ;to the next phase in the lists lo to 3 times l0 ;l0 must be a multiple of 7 ;double-quantum evolution period 4 del360 ipp13 ipp14 ;increment reconversion pulse phase ph13 and ph14 pointers del360 ;to the next phase in the lists lo to 4 times l2 ;del360 = (1s/cnst31)/7 6 tau1:f1 ph13 ;c7 reconversion, 1 loop = 2*Tr/7, tau4:f1 ph14 ipp14 ;increment phase ph14 pointer tau3:f1 ph13 ipp13 ;increment phase ph13 pointer ;to the next phase in the lists lo to 6 times l1 ;l1 must be a multiple of 7 (p1 pl1 ph5):f1 ;detection pulse 2u gosc ph31 ;gosc does not loop to 1 ;start ADC with ph31 signal routing ;DQ filtering (four phase cycling): ;1m ip13 ;increments all phases of ph13 by 90° ;1m ip14 ;increments all phases of ph14 by 90° 1m ip13*16384 ;increments all phases of ph13 by 90° 1m ip14*16384 ;increments all phases of ph14 by 90° lo to 2 times ns ;next scan 100m wr #0 if #0 zd ;save data ;1m ip11 ;increments all phases of ph11 by 45°, ;90° phase for DQ coherence ;1m ip12 ;increments all phases of ph12 by 45°, ;90° phase for DQ coherence 1m ip11*8192 ;increments all phases of ph11 by 45°, ;90° phase for DQ coherence 1m ip12*8192 ;increments all phases of ph12 by 45°, ;90° phase for DQ coherence lo to 1 times 2 ;t1 quadrature detection 7 1m iu2 ;increment counter l2 in 2*Tr/7 lo to 7 times l3 ;1m rp11 ;reset all phases of ph11, ph12, ph13, and ph14 ;1m rp12 ;to their original values, i.e. to the values they ;1m rp13 ;had before the first ip11, ip12, ip13, and ip14 ;1m rp14 ;in case of STATES remove semicolon at beginning of the 4 lines lo to 1 times count ;count = td1/2 HaltAcqu, 1m exit ph1= 0 ;for saturation pulse ;ph11 = (float,45.0) 0.00 51.43 102.86 154.29 205.71 257.14 308.57 ;ph12 = (float,45.0) 180.00 231.43 282.86 334.29 385.71 437.14 488.57 ;ph13 = (float,90.0) 90.00 141.43 192.86 244.29 295.71 347.14 398.57 ;ph14 = (float,90.0) 270.00 321.43 372.86 424.29 475.71 527.14 578.57 ph11=(65536) 0 9362 18725 28087 37449 46811 56174 ph12=(65536) 32768 42130 51493 60855 4681 14043 23406 ph13=(65536) 16384 25746 35109 44471 53833 63195 7022 ph14=(65536) 49152 58514 2341 11703 21065 30427 39790 ph5= 0 1 2 3 1 2 3 0 2 3 0 1 3 0 1 2 ph31 = 0 3 2 1 1 0 3 2 2 1 0 3 3 2 1 0 ;ph31 = ph5 + 2*ph13
31P POST C7 DQ-SQ spectrum with large F1 spectral width of VPI-5 zeolite; rotor spinning speed: 10 kHz.
Pulseprogram parameters for pc72dlsw.ppm:
General | |
PULPROG | pc72dlsw.ppm |
TD | 2048 |
NS | 16 |
DS | 0 |
SWH [Hz] | 12500.00 |
AQ [s] | 0.0820100 |
RG | 4 |
DW [µs] | 40.000 |
DE [µs] | 6.50 |
CNST11 | 0.0000000 |
CNST31 | 10000.0000000 |
D1 [s] | 10.00000000 |
D20 [s] | 0.10000000 |
d31 [s] | 0.00010000 |
in0 [s] | 0.00002857 |
inf1 [s] | 0.00002857 |
L1 | 59 |
l2 | 0 |
L3 | 1 |
L20 | 20 |
ZGOPTNS | -Dpresat |
count | 200 |
del360 [s] | 0.00001429 |
Channel f1 | |
NUC1 | 31P |
P1 [µs] | 3.00 |
PL1 [dB] | 8.00 |
PL7 [dB] | 7.80 |
SFO1 [MHz] | 202.4830777 |
tau1 [µs] | 3.57 |
tau2 [µs] | 10.71 |
tau3 [µs] | 14.29 |
Acquisition parameters:
F2 | F1 | |
Experiment | ||
PULPROG | pc72dlsw.ppm | |
AQ_mod | DQD | |
FnMODE | undefined | |
TD | 2048 | 400 |
NS | 16 | |
DS | 0 | |
TD0 | 1 | |
Width | ||
SW [ppm] | 61.7336 | 172.8626 |
SWH [Hz] | 12500.000 | 35001.750 |
IN_F [µs] | 28.57 | |
AQ [s] | 0.0820100 | 0.0057140 |
Nucleus1 | ||
NUC1 | 31P | 31P |
O1 [Hz] | -1593.30 | -1593.30 |
O1P [ppm] | -7.869 | -7.869 |
SFO1 [MHz] | 202.4830777 | 202.4830777 |
BF1 [MHz] | 202.4846710 | 202.4846710 |
Definition of PC7 excitation pulse.
Definition of C7 excitation pulse.