Temperature-induced reversible structural phase transition of 1-(chloromethyl)-1,4-diazoniabicyclo[2.2.2]octane bis(perchlorate)
Chen, Li-Zhuang; Huang, Deng-Deng; Ge, Jia-Zhen; Wang, Fang-Ming; CrystEngComm 16 (2014) 2944–; doi:10.1039/c3ce42190b

data_7214304
_publ_section_title
;
 Temperature-induced reversible structural phase transition of
 1-(chloromethyl)-1,4-diazoniabicyclo[2.2.2]octane bis(perchlorate)
;
_journal_issue                   14
_journal_name_full               CrystEngComm
_journal_page_first              2944
_journal_paper_doi               10.1039/c3ce42190b
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C7 H15 Cl N2, 2(Cl O4)'
_chemical_formula_sum            'C7 H15 Cl3 N2 O8'
_chemical_formula_weight         361.56
_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                   13.3098(12)
_cell_length_b                   12.7949(12)
_cell_length_c                   16.0119(15)
_cell_measurement_temperature    170(2)
_cell_volume                     2726.8(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      170(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0247
_diffrn_reflns_av_sigmaI/netI    0.0150
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19183
_diffrn_reflns_theta_full        25.67
_diffrn_reflns_theta_max         25.67
_diffrn_reflns_theta_min         2.97
_exptl_absorpt_coefficient_mu    0.711
_exptl_absorpt_correction_T_max  0.8709
_exptl_absorpt_correction_T_min  0.8150
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.761
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1488
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.149
_refine_diff_density_min         -0.772
_refine_diff_density_rms         0.094
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.243
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         2582
_refine_ls_number_restraints     48
_refine_ls_restrained_S_all      1.246
_refine_ls_R_factor_all          0.0615
_refine_ls_R_factor_gt           0.0560
_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^)+(0.0614P)^2^+7.6167P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1493
_refine_ls_wR_factor_ref         0.1537
_reflns_number_gt                2322
_reflns_number_total             2582
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ce42190b2.cif
_cod_data_source_block           111
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/current/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 b c a '
_cod_database_code               7214304