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Crystal structure of tamsulosin hydrochloride, C20H29N2O5SCl

Published online by Cambridge University Press:  16 February 2021

Nilan V. Patel ,
Joseph T. Golab ,
James A. Kaduk Open the ORCID record for James A. Kaduk [Opens in a new window] ,
Amy M. Gindhart  and
Thomas N. Blanton Open the ORCID record for Thomas N. Blanton [Opens in a new window]
Nilan V. Patel
Affiliation:
Illinois Mathematics and Science Academy, 1500 Sullivan Rd., Aurora, Illinois60506-1000, USA
Joseph T. Golab
Affiliation:
Illinois Mathematics and Science Academy, 1500 Sullivan Rd., Aurora, Illinois60506-1000, USA
James A. Kaduk*
Affiliation:
Illinois Institute of Technology, 3101 S. Dearborn St., Chicago, Illinois60616, USA North Central College, 131 S. Loomis St., Naperville, Illinois60540, USA
Amy M. Gindhart
Affiliation:
ICDD, 12 Campus Blvd., Newtown Square, Pennsylvania19073-3273, USA
Thomas N. Blanton
Affiliation:
ICDD, 12 Campus Blvd., Newtown Square, Pennsylvania19073-3273, USA
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

The crystal structure of tamsulosin hydrochloride has been solved and refined using synchrotron X-ray powder diffraction data and optimized using density functional techniques. Tamsulosin hydrochloride crystallizes in space group P21 (#4) with a = 7.62988(2), b = 9.27652(2), c = 31.84996(12) Å, β = 93.2221(2)°, V = 2250.734(7) Å3, and Z = 4. In the crystal structure, two arene rings are connected by a carbon chain oriented roughly parallel to the c-axis. The crystal structure is characterized by two slabs of tamsulosin hydrochloride molecules perpendicular to the c-axis. As expected, each of the hydrogens on the protonated nitrogen atoms makes a strong hydrogen bond to one of the chloride anions. The result is to link the cations and anions into columns along the b-axis. One hydrogen atom of each sulfonamide group also makes a hydrogen bond to a chloride anion. The other hydrogen atom of each sulfonamide group forms bifurcated hydrogen bonds to two ether oxygen atoms. The powder pattern is included in the Powder Diffraction File™ as entry 00-065-1415.

Keywords

tamsulosin hydrochlorideFlomax®powder diffractionRietveld refinementdensity functional theory
Type
New Diffraction Data
Information
Powder Diffraction , Volume 36 , Issue 2 , June 2021 , pp. 85 - 91
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of International Centre for Diffraction Data

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