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Crystal structure of atorvastatin calcium trihydrate Form I (Lipitor®), (C33H34FN2O5)2Ca(H2O)3

Published online by Cambridge University Press:  06 April 2020

Ryan L. Hodge ,
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]
Ryan L. Hodge
Affiliation:
North Central College, 131 S. Loomis St., Naperville, Illinois60540, USA
James A. Kaduk*
Affiliation:
North Central College, 131 S. Loomis St., Naperville, Illinois60540, USA Illinois Institute of Technology, 3101 S. Dearborn St., Chicago, Illinois60616, 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: kaduk@polycrystallography.com
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Abstract

The crystal structure of atorvastatin calcium trihydrate (ACT) has been solved and refined using synchrotron X-ray powder diffraction data and optimized using density functional theory techniques. ACT crystallizes in space group P1 (#1) with a = 5.44731(4), b = 9.88858(16), c = 29.5925(10) Å, α = 95.859(3), β = 94.211(1), γ = 105.2790(1)°, V = 1521.277(10) Å3, and Z = 1. The most prominent feature of the crystal structure is a hydrophilic layer parallel to the ab-plane. The atorvastatin anions bond to each side of the hydrophilic layer, forming a triple layer. The calcium coordination is distorted octahedral, with the CaO6 coordination sphere being comprised of four carboxylate oxygens, one coordinated water molecule, and a hydroxyl group from one but not the second atorvastatin anion. Several O–H⋯O hydrogen bonds form a two-dimensional network parallel to the ab-plane. The powder pattern has been submitted to ICDD® for inclusion in the Powder Diffraction File™.

Keywords

atorvastatin calcium trihydratedensity functional theoryLipitor®powder diffractionRietveld refinement
Type
New Diffraction Data
Information
Powder Diffraction , Volume 35 , Issue 2 , June 2020 , pp. 136 - 143
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Copyright
Copyright © International Centre for Diffraction Data 2020

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