Humidity Control of Isostructural Dehydration and Pressure-Induced Polymorphism in 1,4-Diazabicyclo[2.2.2]octane Dihydrobromide Monohydrate
Andrzejewski, Michał; Olejniczak, Anna; Katrusiak, Andrzej; Crystal Growth & Design 11 (2011) 4892–; doi:10.1021/cg200743n

data_4501121
_publ_section_title
;
 Humidity Control of Isostructural Dehydration and Pressure-Induced
 Polymorphism in 1,4-Diazabicyclo[2.2.2]octane Dihydrobromide Monohydrate
;
_journal_issue                   11
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4892
_journal_paper_doi               10.1021/cg200743n
_journal_volume                  11
_journal_year                    2011
_chemical_formula_moiety         'C6 H14 N2, H2 O, 2(Br)'
_chemical_formula_sum            'C6 H16 Br2 N2 O'
_chemical_formula_weight         292.03
_chemical_name_common
;
dabco dihydrobromide monohydrate, dabco2HBr*H2O
;
_chemical_name_systematic
;
1,4-diazabicyclo[2.2.2]octane dihydrobromide monohydrate
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2b'
_symmetry_space_group_name_H-M   'P b c 21'
_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                   15.015(3)
_cell_length_b                   12.486(2)
_cell_length_c                   11.2364(16)
_cell_measurement_reflns_used    4767
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.99
_cell_measurement_theta_min      2.12
_cell_volume                     2106.6(6)
_computing_cell_refinement       'CrysAlis (Oxford Diffraction, 2002)'
_computing_data_collection       'CrysAlis (Oxford Diffraction, 2002)'
_computing_data_reduction        'CrysAlis (Oxford Diffraction, 2002)'
_computing_molecular_graphics
;X-Seed (Barbour, 2001) 
and POV-Ray (Persistence of Vision, 2004)

Mercury (2008)
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.953
_diffrn_measured_fraction_theta_max 0.953
_diffrn_measurement_device_type  'multiwire proportional'
_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  0.1302
_diffrn_reflns_av_sigmaI/netI    0.1532
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            28700
_diffrn_reflns_theta_full        27.99
_diffrn_reflns_theta_max         27.99
_diffrn_reflns_theta_min         2.12
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    7.653
_exptl_absorpt_correction_T_max  0.46
_exptl_absorpt_correction_T_min  0.16
_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    1.842
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.10
_refine_diff_density_max         3.184
_refine_diff_density_min         -1.958
_refine_diff_density_rms         0.309
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -10(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.990
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     121
_refine_ls_number_reflns         4767
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      0.993
_refine_ls_R_factor_all          0.1705
_refine_ls_R_factor_gt           0.1059
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3029
_refine_ls_wR_factor_ref         0.3203
_reflns_number_gt                2317
_reflns_number_total             4767
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg200743n_si_002.cif
_cod_data_source_block           dabco2HBr*H2Oalfa
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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        2106.5(6)
_cod_original_sg_symbol_H-M      Pbc2(1)
_cod_database_code               4501121