Received 20 November 2013
The title compound, C18H21BF2N2, is a lipophilic dye based on a BODIPY fluorophore backbone, which was developed for microscopic imaging of lipid droplets; the molecule has a planar BODIPY core [dihedral angle between the pyrrole rings = 2.3 (3)°] and two tetramethylene substituents at the 2,3- and 5,6-positions in a half-chair conformation. One of the tetramethylene substituents is disordered over two two sets of sites with site occupancies of 0.5. In the crystal, pairs of C-HF interactions link the molecules into inversion dimers. Neighbouring dimers are linked by further C-HF interactions, forming an infinite array. C-H and - [centroid-centroid distance = 4.360 (3) Å] interactions are observed between the BODIPY core and the tetramethylene substituents of neighbouring dimer pairs.
Data collection: COLLECT (Bruker, 2004); cell refinement: SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO (Otwinowski & Minor, 1997) and SCALEPACK; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: VM2201 ).
Professor Kari Rissanen is gratefully acknowledged for his help with the data collection and structure refinement. Dr Arto Valkonen and Filip Topic are acknowledged for their help with preparing the CIF file.
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