Auftragsformulare

• Bei nicht automatisierten Messungen, die von uns durchgeführt werden, bitte das passende Auftragsformular ausfüllen und uns senden oder mit der Probe abgeben:
  • Flüssige Proben
  • Feste Proben

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Verwaltungs- und Benutzungsordnung

Entgeltliste

Nutzung

• Day time: from 7:00 to 19:00
• Night time: from 19:00 to 7:00

• Standard experiments (e.g. ¹H or ¹⁹F with 16 scans, ¹³C with 200 scans, H,H-COSY) that take less than 12 minutes can be performed without booking a spectrometer.
• Longer running experiments (e.g. ¹³C with 2.000 scans) will be automatically enqueued as night time measurements.
• The weekend time is treated like night time, marked experiments will be run preferentially.
• Please note the indicator in the lower right corner of the ICON NMR program that states the total occupied time for day and night time experiments.
• If the night time queue extends 12 hours, all additional experiments will be shifted to the next night.
• To ensure a reasonable sample throughput during day time, we demand using 16 scans as a standard setting for ¹H and ¹⁹F experiments on Kurt and Emmy.
• ¹³C experiments with 200 scans and ³¹P with 50 scans can be run during day time if necessary, but should be preferentially enqueued for the night. Toggle the sun symbol (next to your experiment selection) to the moon symbol therefore.

Avoid cluttering the day time queue with lots of experiments or unnecessarily high numbers of scans !

• You should not use more than 20 minutes of measurement time at once.

Reservierung

For time-consuming measurements (kinetics experiments, titrations, high number of scans) please reserve instrument time through our Reservation System.

Sample Preparation

• Usable NMR-tubes are 5 mm in diameter and 7" or 8" in length. Longer tubes cannot be handled.
• For high-sensitivity measurements and variable temperature (VT) experiments, high grade tubes (e.g. Norell 502-178) are required.
• Samples need to be homogenous and fully dissolved in a deuterated solvent (CDCl₃, DMSO-d6, D₂O, Acetone-d6, etc.)
• Filling height of 40 mm is highly advised (equals ~ 0.6 mL of solution).
• Less filling height easily leads to problems in the measuring process. A little over is no problem.
• Undissolved material generally leads to line broadening and can fault the measurement. Filtration over 0.45 µm PTFE syringe filters is beneficial.
• For long-running experiments in chlorinated solvents (DCM-d2, CDCl₃), specialty PTFE tube caps are highly recommended, as they reduce solvent evaporation significantly.

Sample Submission

• Institute members (bachelor/master students, Ph.D. candidates, Postdocs) can use the self-service and set up experiments on their own.
• External users need to contact the NMR-Service and hand in their appropriately prepared samples together with a service form.
• Solid Samples: Contact Christian Tontsch for training in preparing samples for solid-state measurements.

Information on how to transfer your data is available at the instrument workstations.

Data download is limited to the campus network.

Christian Tontsch