Low melting molecular complexes. The structures of molecular complexes of tri- and di-chloromethanes with small ketones and 1,4-dioxane
Yufit, D. S.; Howard, J. A. K.; CrystEngComm 14 (2012) 2003–; doi:10.1039/c2ce06526f

data_7207486
_publ_section_title
;
 Low melting molecular complexes. The structures of molecular complexes of
 tri- and di-chloromethanes with small ketones and 1,4-dioxane
;
_journal_issue                   6
_journal_name_full               CrystEngComm
_journal_page_first              2003
_journal_paper_doi               10.1039/c2ce06526f
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C4 H8 O, 2 CHCl3'
_chemical_formula_sum            'C6 H10 Cl6 O'
_chemical_formula_weight         310.84
_chemical_melting_point          177(2)
_chemical_name_common            'chloroform methylethylketone co-crystal'
_chemical_name_systematic
;
trichloromethane butanone-2 clathrate (2:1)
;
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 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                 95.86(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.054(2)
_cell_length_b                   6.965(3)
_cell_length_c                   16.346(6)
_cell_measurement_reflns_used    480
_cell_measurement_temperature    165.0(2)
_cell_measurement_theta_max      22.94
_cell_measurement_theta_min      2.50
_cell_volume                     685.6(5)
_computing_cell_refinement       'SAINT v6.45A (Bruker, 2003)'
_computing_data_collection       'SMART v5.625 (Bruker, 2001)'
_computing_data_reduction        'SAINT v6.45A (Bruker, 2003)'
_computing_molecular_graphics
;
OLEX2: a complete structure solution, refinement and analysis program.
Dolomanov et al., J. Appl. Cryst. (2009). 42, 339-341
;
_computing_publication_material
;
OLEX2: a complete structure solution, refinement and analysis program.
Dolomanov et al., J. Appl. Cryst. (2009). 42, 339-341
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)/Bruker'
_diffrn_ambient_temperature      165.0(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 5.6
_diffrn_detector_type            'Bruker SMART CCD 6000 area detector'
_diffrn_measured_fraction_theta_full 0.875
_diffrn_measured_fraction_theta_max 0.875
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  Parallel,graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'MO K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_xray_symbol    K-L~3~
_diffrn_reflns_av_R_equivalents  0.0830
_diffrn_reflns_av_sigmaI/netI    0.0893
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            4192
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.51
_diffrn_source                   'sealed X-ray tube'
_diffrn_source_current           40.0
_diffrn_source_power             2.0
_diffrn_source_target            Mo
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    1.218
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            less
_exptl_crystal_colour_lustre     dull
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.506
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cylinder
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.349
_refine_diff_density_min         -0.285
_refine_diff_density_rms         0.067
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.13(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.957
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         2599
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.957
_refine_ls_R_factor_all          0.1068
_refine_ls_R_factor_gt           0.0497
_refine_ls_shift/su_max          0.115
_refine_ls_shift/su_mean         0.009
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
calc w=1/[\s^2^(Fo^2^)+(0.0400P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1044
_refine_ls_wR_factor_ref         0.1205
_reflns_number_gt                1398
_reflns_number_total             2599
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce06526f.txt
_cod_data_source_block           4_CMEK
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '175 - 179' was changed to '177(2)' -
the average value was taken and precision was
estimated.

'_symmetry_cell_setting' value 'Monoclinic' changed to
'monoclinic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_diffrn_source_target' value 'MO' changed to 'Mo'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        685.6(4)
_cod_database_code               7207486