Four bis(1-chloro-2,2,4,4-tetramethyl-3-oxocyclobutan-1-yl)oligosulfanes
Linden, Anthony; Majchrzak, Agnieszka; Cavegn, Jovita; Mloston, Grzegorz; Heimgartner, Heinz; Acta Crystallographica Section C 58 (2002) o480–o484; doi:10.1107/S0108270102011319

data_2012850
_publ_section_title
;
 Four
 bis(1-chloro-2,2,4,4-tetramethyl-3-oxocyclobutan-1-yl)oligosulfanes
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o480
_journal_page_last               o484
_journal_paper_doi               10.1107/S0108270102011319
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C16 H24 Cl2 O2 S2'
_chemical_formula_sum            'C16 H24 Cl2 O2 S2'
_chemical_formula_weight         383.39
_chemical_melting_point          .371E-305
_chemical_name_systematic
;
bis(1-chloro-2,2,4,4-tetramethyl-3-oxocyclobutan-1-yl)disulfane
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/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
_cell_angle_beta                 105.4292(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.73790(10)
_cell_length_b                   26.7454(4)
_cell_length_c                   10.6473(2)
_cell_measurement_reflns_used    103426
_cell_measurement_temperature    160.0(10)
_cell_measurement_theta_max      30.0
_cell_measurement_theta_min      2.0
_cell_volume                     1849.58(5)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2000)'
_computing_data_reduction
'DENZO-SMN and SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'SHELXL97 and PLATON (Spek, 2002)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      160.0(10)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD area-detector'
_diffrn_measurement_method       '\f and \w scans with \k offsets'
_diffrn_radiation_monochromator  'horizontally mounted graphite crystal'
_diffrn_radiation_source         'Nonius FR591 sealed tube generator'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.069
_diffrn_reflns_av_sigmaI/netI    0.047
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            40268
_diffrn_reflns_theta_full        30.01
_diffrn_reflns_theta_max         30.01
_diffrn_reflns_theta_min         3.03
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.580
_exptl_absorpt_correction_T_max  0.961
_exptl_absorpt_correction_T_min  0.872
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(Coppens et al., 1965)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             808
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.37
_refine_diff_density_min         -0.35
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     207
_refine_ls_number_reflns         5397
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          0.069
_refine_ls_R_factor_gt           0.038
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0392P)^2^+0.5066P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.082
_refine_ls_wR_factor_ref         0.093
_reflns_number_gt                3839
_reflns_number_total             5400
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bm1503.cif
_cod_data_source_block           III
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2012850
_cod_database_fobs_code          2012850