An unforeseen polymorph of coronene by the application of magnetic fields during crystal growth
Jason Potticary; Lui R. Terry; Christopher Bell; Alexandros N. Papanikolopoulos; Peter C. M. Christianen; Hans Engelkamp; Andrew M. Collins; Claudio Fontanesi; Gabriele Kociok-Kohn; Simon Crampin; Enrico Da Como; Simon R. Hall; Nature Communications 7 (2016) 11555–; doi:10.1038/ncomms11555

data_1548039
_publ_section_title
;
 An unforeseen polymorph of coronene by the application of magnetic fields
 during crystal growth
;
_journal_name_full               'Nature Communications'
_journal_page_first              11555
_journal_paper_doi               10.1038/ncomms11555
_journal_volume                  7
_journal_year                    2016
_chemical_formula_moiety         'C24 H12'
_chemical_formula_sum            'C24 H12'
_chemical_formula_weight         300.34
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 96.235(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   10.3855(12)
_cell_length_b                   3.8212(3)
_cell_length_c                   17.2111(18)
_cell_measurement_reflns_used    387
_cell_measurement_temperature    80(2)
_cell_measurement_theta_max      66.3670
_cell_measurement_theta_min      4.7520
_cell_volume                     678.98(12)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_molecular_graphics
'ORTEP3 for Windows - Farrugia, L. J. J. Appl. Crystallogr. 1997, 30, 565'
_computing_publication_material
;
 'SHELXL-2013 (Sheldrick, 2013)
;
_computing_structure_refinement
;SHELXL-2014/7 (Sheldrick, 2014)
 Sheldrick GM (2008) Acta Crystallogr A64:112--122 and 
 C. B. H\"ubschle, G. M. Sheldrick and B. Dittrich
 ShelXle: a Qt graphical user interface for SHELXL
 J. Appl. Cryst., 44, (2011) 1281-1284.
;
_computing_structure_solution
; 
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. , 
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R. 
 (1999) J. Appl. Cryst. 32, 115-119
;
_diffrn_ambient_temperature      80(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 8.1150
_diffrn_detector_type            EosS2
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, EosS2'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0239
_diffrn_reflns_av_unetI/netI     0.0533
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       2
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            1654
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        66.573
_diffrn_reflns_theta_max         66.573
_diffrn_reflns_theta_min         4.756
_diffrn_source                   'sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.638
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.54573
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'fluorescent pale yellow'
_exptl_crystal_density_diffrn    1.469
_exptl_crystal_description       plate
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.280
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.370
_refine_diff_density_rms         0.099
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1206
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.1043
_refine_ls_R_factor_gt           0.0752
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1348P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1913
_refine_ls_wR_factor_ref         0.2203
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    .
_reflns_Friedel_fraction_max     .
_reflns_number_gt                816
_reflns_number_total             1206
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ncomms11555-s3.cif
_cod_data_source_block           s15phy1
_cod_database_code               1548039
_shelx_estimated_absorpt_t_min   0.842
_shelx_estimated_absorpt_t_max   0.981
_shelx_res_checksum              51250
_shelx_hkl_checksum              4671