502: 5mm BBFO-Z, #Z113652-0083

In principle: Do NOT trust these values blindly - verify them if questionable!

Amplifiers can go bad or your sample environment like salt, temperature, ... might alter the pulse width!

1. General Information:

  • Shimfile: chloshim.600 is a good starting point for aqueous samples
  • Read Pulses from Master List:
    • Read in pulse sequence and Parameter file
    • Use the getprosol command or click on the test tube symbol in ased
    • For Bruker Pulse Sequences type: getprosol 1H 'p1' ' pl1' , where p1 is the determined pulse length [us] at the power level pl1 [dB].

2. Hard Pulses:

Nucleus Type Attenuation Channel 90deg Pulse Amplifier Calc. Date
1H -14.0 dB f1 11.50 us 25.1 W 28W max 8/28/17
waltz16 f1 80.0 us
TOCSY f1 26.0 us
ROESY f1 90.0 us
.
13C hard -17.40 dB f1 12.0 us 55.0W 150W max 8/28/17
Urea hard -17.50 dB f2 12.0 us 56.2 W 8/28/17
CPD -2.20 dB f2 70.0 us 1.66 W -2.18 dB 8/28/17
TOCSY -11.15 dB f2 25.0 us 13.0 W-11.12 dB 8/28/17
ROESY +2.85 dB f2 125.0 us 0.52 W +2.85 dB 8/28/17
Presat +8.90 dB f2 250.0 us 0.13 W +8.88 dB 8/28/17
LowDec +3.85 dB f2 140.0 us 0.41 W +3.85 dB 8/28/17
.
15N hard -22.15 dB f1 15.0 us 164.1 W 210W max 8/28/17
Urea hard -22.30 dB f2 15.0 us 169.8 W 8/28/17
+0.95 dB f2 220.0 us 0.80 W +1.03 dB 8/28/17
.
19F -17.15 dB QNP-switch f1 12 us 51.3 W 60 W max 8/29/17
31P -19.5 dB f1 11.20 us 89.1 W 110 W max 8/29/17
2H -14.0 dB f1 148 us 19.8 W 30 W max 8/29/17
-0.95 dB f1 80 us W 8/29/17

3. Soft Pulses: (Urea)

Nucleus Type Channel Pulse Attenuation Amplifier Calc. Date
13C, α+β Q5_sebop 420us f2 90 deg -12.80 dB 19.06 W -13.12 dB 8/27/17
α+β Q5tr_sebop 420us f2 90 deg -13.20 dB20.90 W -13.12 dB 8/27/17
α Q5.1000 1800us f2 90 deg -0.30 dB 1.07 W +0.75 dB 8/27/17
α Q5tr.1000 1800us f2 90 deg -0.40 dB 1.10 W +0.75 dB 8/27/17
α+β Q3_surbop 324us f2 180 deg -13.10 dB 20.4 W -13.27 dB 8/27/17
α Q3_surbop 888us f2 180 deg -4.40 dB 2.75 W -4.52 dB 8/27/17
α Q3_surbop 972us f2 180 deg -3.60 dB 2.29 W -3.73 dB 8/27/17
CO dec Q3_surbop 1260us f2 180 deg -1.40 dB 1.38 W -1.48 dB 8/27/17

4. Miscellaneous:

Offset Ca - carbonyl (56 - 175ppm): -14965 Hz
1H offset @ 4.7 pppm: 2350.6 Hz
Main Field: 500.13 MHz
BSMS Field: +2966 units (10-13-2003)
+2647 units (06-18-2019)

5. Conditions for pulse determination:

  • Sample:
    1H-pulses: 2mM Sucrose + 0.5mM DSS + 2mM NaN3, 90% H2O 10% D2O
    X-pulses: 13C, 15N labled Urea in DMSO
    13C-shift: 48.5ppm, J=138.5Hz
    15N-shift: 76.0ppm, J=88.5Hz
  • Temperature: 298K
  • RF-Filters: none
    1H = none
    X = none
    Y = none
    Z = none
  • Attenuators at amplifier input: none
    1H = 0dB
    X = 0dB
    Y = 0dB
    Z = 0dB
  • Cortab combinations done 11-28-03:
    1H --> FCU 1+2, MOD, MULT, BLA
    13C --> FCU 1+2, obn X-Amplifier: MOD, MULT, BLA
    15N Version 3.5 does not work, use cortab v3.1, which is NOT linear