Isobaric and isochoric freezing of CH~2~BrCl and isostructural relations between CH~2~Cl~2~, CH~2~Br~2~ and CH~2~BrCl
Podsiadło, Marcin; Katrusiak, Andrzej; Acta Crystallographica Section B 63 (2007) 903–911; doi:10.1107/S0108768107044618

data_2102964
_publ_section_title
;
 Isobaric and isochoric freezing of CH~2~BrCl and isostructural
 relations between CH~2~Cl~2~, CH~2~Br~2~ and CH~2~BrCl
;
_journal_coeditor_code           AV5094
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              903
_journal_page_last               911
_journal_paper_doi               10.1107/S0108768107044618
_journal_volume                  63
_journal_year                    2007
_chemical_formula_moiety         ' C1 H2 Br1 Cl1'
_chemical_formula_sum            'C H2 Br Cl'
_chemical_formula_weight         129.39
_chemical_melting_point          185
_chemical_name_common            bromochloromethane
_chemical_name_systematic
;
bromochloromethane
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 112.96(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.959(2)
_cell_length_b                   4.4531(9)
_cell_length_c                   14.873(3)
_cell_measurement_reflns_used    1010
_cell_measurement_temperature    170(2)
_cell_measurement_theta_max      29.11
_cell_measurement_theta_min      2.97
_cell_volume                     729.3(3)
_computing_cell_refinement       'CrysAlisRED (Oxford Diffraction, 2004)'
_computing_data_collection       'CrysAlisCCD (Oxford Diffraction, 2004)'
_computing_data_reduction        'CrysAlisRED (Oxford Diffraction, 2004)'
_computing_molecular_graphics    'X-seed 2.0'
_computing_publication_material  'SHELXL--97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.924
_diffrn_measured_fraction_theta_max 0.924
_diffrn_measurement_device_type  'KM-4 CCD'
_diffrn_measurement_method       \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  0.1089
_diffrn_reflns_av_sigmaI/netI    0.1025
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            2422
_diffrn_reflns_theta_full        29.11
_diffrn_reflns_theta_max         29.11
_diffrn_reflns_theta_min         2.97
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    11.727
_exptl_absorpt_correction_T_max  0.32
_exptl_absorpt_correction_T_min  0.22
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 Correction for absorption was made using XEMP (SHELXTL,
 Sheldrick (1990)).
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.357
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             480
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.828
_refine_diff_density_min         -0.655
_refine_ls_extinction_coef       0.036(4)
_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   1.149
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     36
_refine_ls_number_reflns         909
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.145
_refine_ls_R_factor_all          0.0917
_refine_ls_R_factor_gt           0.0656
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0777P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1564
_refine_ls_wR_factor_ref         0.1715
_reflns_number_gt                643
_reflns_number_total             909
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            av5094.cif
_cod_data_source_block           cbm_170K
_cod_original_sg_symbol_H-M      ' C 2 / c'
_cod_database_code               2102964
_cod_database_fobs_code          2102964