Structural transformations in crystals induced by radiation and pressure. Part 1. How pressure influences the intramolecular photochemical reactions in crystals
Bąkowicz, Julia; Turowska-Tyrk, Ilona; CrystEngComm  (2014) –; doi:10.1039/c4ce00320a

data_7216159
_publ_section_title
;
 Structural transformations in crystals induced by radiation and pressure.
 Part 1. How pressure influences the intramolecular photochemical
 reactions in crystals
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/c4ce00320a
_journal_year                    2014
_chemical_formula_sum            'C17 H18 O'
_chemical_formula_weight         238.31
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   13.3379(16)
_cell_length_b                   12.2853(17)
_cell_length_c                   15.4065(16)
_cell_measurement_pressure       1270000
_cell_measurement_reflns_used    2438
_cell_measurement_temperature    299(2)
_cell_measurement_theta_max      22.41
_cell_measurement_theta_min      3.44
_cell_volume                     2524.5(5)
_computing_cell_refinement       'CrysAlisPro (Agilent Technologies, 2013)'
_computing_data_collection       'CrysAlisPro (Agilent Technologies, 2013)'
_computing_data_reduction        'CrysAlisPro (Agilent Technologies, 2013)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_pressure         1270000
_diffrn_ambient_temperature      299(2)
_diffrn_detector_area_resol_mean 15.9718
_diffrn_measured_fraction_theta_full 0.726
_diffrn_measured_fraction_theta_max 0.726
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\f- and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1006
_diffrn_reflns_av_sigmaI/netI    0.0761
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            13363
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.48
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.68
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;   
SCALE3 ABSPACK (Agilent Technologies, 2013)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.254
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1024
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.250
_refine_diff_density_min         -0.225
_refine_diff_density_rms         0.059
_refine_ls_extinction_coef       0.0093(19)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         1619
_refine_ls_number_restraints     136
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.1706
_refine_ls_R_factor_gt           0.0879
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0587P)^2^+8.3414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1843
_refine_ls_wR_factor_ref         0.2351
_reflns_number_gt                848
_reflns_number_total             1619
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce00320a1.cif
_cod_data_source_block           20.5%P_1.27GPa
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      'P bca'
_cod_database_code               7216159