C19H17Cl3
Baird, Mark S.; Light, Mark E.; Hursthouse, Michael B.; Crystal Structure Report Archive  (1998) 746–; doi:

data_1519195
_publ_section_title
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 C19H17Cl3
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_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              746
_journal_year                    1998
_chemical_formula_sum            'C19 H17 Cl3'
_chemical_formula_weight         351.68
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 97.89(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.242(2)
_cell_length_b                   9.8900(10)
_cell_length_c                   14.073(2)
_cell_measurement_temperature    150(2)
_cell_volume                     1687.7(4)
_computing_cell_refinement       REFINE
_computing_data_collection       'MADNES (Pflugrath & Messerschmidt, 1989)'
_computing_data_reduction        'ABSURD (Karaulov, 1992)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution
'SIR92 (Altomare, Cascarano, Giacovazzo & Guaglitardi, 1993)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.693
_diffrn_measured_fraction_theta_max 0.693
_diffrn_measurement_device_type  'Delft instruments FAST area detector'
_diffrn_measurement_method
'Intensity measurements as described by Darr, Drake, Hursthouse & Malik (1993)'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode generator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0813
_diffrn_reflns_av_sigmaI/netI    0.2418
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -3
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3985
_diffrn_reflns_theta_full        25.16
_diffrn_reflns_theta_max         25.16
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    0.536
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            unknown
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       unknown
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.064
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.633
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2102
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.633
_refine_ls_R_factor_all          0.1011
_refine_ls_R_factor_gt           0.0425
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0234P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0947
_refine_ls_wR_factor_ref         0.1046
_reflns_number_gt                973
_reflns_number_total             2102
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            eCrystal-746.cif
_cod_data_source_block           s92
_cod_depositor_comments
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Citation :
Baird, Mark S. and Light, Mark E. and Hursthouse, Michael B. (1998) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/746)

More at:
http://ecrystals.chem.soton.ac.uk/746/
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1519195