Department of Chemistry

All Academic and Industrial Users of X-ray Diffraction
We cooperate with many academic and industrial partners

We have been partially funded by the National Science Foundation. Users may submit samples to us in person or by post and send us the Customer Information Form.

For our industrial users, the legal department at Texas A & M University and the Department of Chemistry have prepared a Testing Agreement that will cover all legal aspects of nondisclosure. The testing agreement should meet and/or exceed your requirements for non-disclosure, while maintaining Texas A & M Universities stature as a non-profit public institution. The services provided by the X-ray Diffraction Laboratory are quid pro quo.

Copies of the Testing Agreement/Non-Disclosure form can be downloaded for your consideration.

Download Testing Agreement

Customer Information Form

Services and Fees

Relation Fee for Instrument Usage
TAMU $30/hour
Non-TAMU $100/hour

Office of Cost Analysis (Texas A&M)
Office of Management and Budget (Whitehouse Budget Office)

You may pay be credit card Instructions will be on the invoice

Industrial users Contact Us



For the Non-disclosure agreement please download the testing agreement (word document) , edit, print and sign two copies of the agreement and fill out the Customer Information Form. Please return both copies of the agreement and one copy of the form to

Joseph Reibenspies
Department of Chemistry
3255 TAMU
580 Ross Street
Texas A & M University
College Station, Texas 77843-3255

A signed copy will be then mailed back to your organization.

Samples submitted to the X-ray Diffraction Laboratory remain under the direct control of the investigator generating the materials. All data obtained by the X-ray Diffraction Laboratory directly relevant to the samples are turned over to the investigator upon completion of work. Publication of such data is at the discretion of the investigator.

See : Sample/Data Ownership and Publication Rights

Samples submitted to the X-ray Diffraction Laboratory remain under the direct control of the investigator generating the materials. All data obtained by the X-ray Diffraction Laboratory directly relevant to the samples are turned over to the investigator upon completion of work. Publication of such data is at the discretion of the investigator. The proceeding is stated with the following understanding

  • The techniques and procedures used in the X-ray Diffraction Laboratory are the property of the Texas A & M University System and of the developer/owner if they are under license to the University
  • Data generated by the X-ray Diffraction Laboratory from joint ventures (service work exempted) and ensuing claims to such data are subject to TAMUS policy on intellectual property

Samples may be submitted in person or by mail. Single-crystal samples should be left in a small amount of their mother liquor and transferred to a sealed sample vial.

  1. Fill out Sample Submission form and Sample Submision File in PDF format

  2. Bring your sample and the sample submission form to room 2408 or 2409 or mail your sample to:

    Joseph Reibenspies
    Department of Chemistry
    3255 TAMU
    580 Ross Street
    Texas A & M University
    College Station, Texas 77843-3255

  3. The X-ray Diffraction Laboratory staff will examine your sample and assign you a data collection date

  4. On the day AFTER data collection please call 979-845-9125 or email to ascertain the status of your structure determination

    Typically a structure is complete in 24 to 48 hours after data has been collected. You will be contacted when your structure is complete.

    Please avoid contact Laboratory Staff in person. This usually will interrupt your structure determination and slow the entire process down.

Samples may be submitted in person or by mail. Powder samples can be delivered in sealed sample vials. Normally only 100mg of the powder sample is needed for the analysis.

  1. Download the sample submission form.

  2. Bring your sample and the sample submission form to room 2408 or 2409 or mail your sample to:
    Joseph Reibenspies
    Department of Chemistry
    3255 TAMU
    580 Ross Street
    Texas A & M University
    College Station, Texas 77843-3255

  3. The X-ray Diffraction Laboratory staff will examine your sample, collect the data and return the results by e-mail.

If you have micro-sample quantities that watch this video on how to prepare and ship your sample.    MICROQUANTITY SAMPLE SHIPMENT

Sample Handling

  • Single-crystal samples should be left in a small amount of their mother liquor and transferred to sealed sample vials
  • Powder samples can be delivered in sealed sample vials
  • Normally only 100mg of the powder sample is needed for analysis
  • When sampling bulk powders be sure to follow good analytical practices
  • Do not grind organic or pharmaceutical samples
  • Hydrates and solvates should not be dried

Sample Shipping

  • Place sample vials in square shipping containers and pack with bubble wrap
  • Ship express air
  • Include MSDS information when available
  • Hazardous materials should be clearly labeled on the outside of the shipping container
  • Ship To:
    Joseph Reibenspies
    Department of Chemistry
    3255 TAMU
    580 Ross Street
    Texas A & M University
    College Station, Texas 77843-3255

Security Access Forms : Chemistry Users Only

 Door Security/Access room 2407 and 2409
Hazardous Work Ares/Access Form
Safety Release Form 

Submission Forms
Single Crystal Submission
Powder Submission

Non-Disclosure

The legal department at Texas A & M University and the Department of Chemistry have prepared a Testing Agreement that will cover all legal aspects of nondisclosure. The testing agreement should meet and/or exceed your requirements for non-disclosure, while maintaining Texas A & M Universities stature as a non-profit public institution. The services provided by the X-ray Diffraction Laboratory are quid pro quo.

Copies of the Testing Agreement can be downloaded form your consideration:

Download Testing Agreement

Customer Information Form

For the Non-disclosure agreement please download the testing agreement , edit, print and sign two copies of the agreement and fill out the Customer Information Form. Please return both copies for the agreement and one copy of the form to
Joseph Reibenspies
Department of Chemistry
3255 TAMU
580 Ross Street
Texas A & M University
College Station, Texas 77843-3255

A signed copy will be then mailed back to your organization.

Samples submitted to the X-ray Diffraction Laboratory remain under the direct control of the investigator generating the materials. All data obtained by the X-ray Diffraction Laboratory directly relevant to the samples are turned over to the investigator upon completion of work. Publication of such data is at the discretion of the investigator. The proceeding is stated with the following understanding

  • The techniques and procedures used in the X-ray Diffraction Laboratory are the property of the Texas A & M University System and of the developer/owner if they are under license to the University
  • Data generated by the X-ray Diffraction Laboratory from joint ventures (service work exempted) and ensuing claims to such data are subject to TAMUS policy on intellectual property

X-ray Laboratory Rules

 

Acknowledgement.

If you use the data collected at the X-ray diffraction laboratory, please use this acknowledgment in your publications. Thank-you.

The X-ray diffractometers and crystallographic computing systems in the X-ray Diffraction Laboratory at the Department of Chemistry, Texas A & M University were purchased with funds provided by the National Science Foundation (CHE-9807975, CHE-0079822 and CHE-0215838).  The Bruker Venture, Quest and ECO diffractometers were purchased with funds provided by Texas A and M University Vice President of Research.

 

Standard experimental paragraph for X-ray Powder Diffraction.

The sample was placed in the sample holder of a two circle goniometer, enclosed in a radiation safety enclosure.  The X-ray source was a 2.2kW Cu X-ray tube, maintained at an operating current of 40 kV and 25 mA.  The X-ray optics was the standard Bragg-Brentano para-focusing mode with the X-ray diverging from a DS slit (1mm) at the tube to strike the sample and then converging at a position sensitive X-ray Detector (Lynx-Eye, Bruker-AXS).  The two-circle 250mm diameter goniometer was computer controlled with independent stepper motors and optical encoders for the theta and 2theta circles with the smallest angular step size of 0.0001 degrees 2theta.  The software suit for data collection and evaluation is windows based. Data collection is automated COMMANDER program by employing a DQL file. Data is analyzed by the program EVA.

 

Reports

First experimental reports will be sent by e-mail. A final hardcopy report, data and your samples will be returned by normal post (upon request). Invoices for services will be sent approximately 90 days after shipment of the final report

Example of Single Crystal Report

Example of Powder Diffraction Report

Expert analysis of results available on request