Pressure induced transformations of 1,4-diazabicyclo[2.2.2]octane (dabco) hydroiodide: diprotonation of dabco, its N-methylation and co-crystallization with methanol
Olejniczak, Anna; Katrusiak, Andrzej; CrystEngComm 12 (2010) 2528–; doi:10.1039/c001379j

data_7212552
_publ_section_title
;
 Pressure induced transformations of 1,4-diazabicyclo[2.2.2]octane (dabco)
 hydroiodide: diprotonation of dabco, its N-methylation and
 co-crystallization with methanol
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              2528
_journal_paper_doi               10.1039/c001379j
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C7 H15 N2, 2(C H4 O), I'
_chemical_formula_sum            'C9 H23 I N2 O2'
_chemical_formula_weight         318.19
_chemical_name_common
;N-methyl-1,4-diazabicyclo(2.2.2)octanium iodide dimethanol
cocrystal
;
_chemical_name_systematic
;
N-methyl-1,4-diazabicyclo[2.2.2]octanium iodide dimethanol cocrystal
;
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 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                 108.69(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.88(2)
_cell_length_b                   6.5844(4)
_cell_length_c                   10.335(10)
_cell_measurement_pressure       2400000
_cell_measurement_reflns_used    3760
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      29.22
_cell_measurement_theta_min      2.64
_cell_volume                     572.4(15)
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.196
_diffrn_measured_fraction_theta_max 0.196
_diffrn_measurement_device_type  'Kuma KM4CCD \k geometry'
_diffrn_measurement_method
;HP omega scans - for more details see:
A. Budzianowski, A. Katrusiak in High-Pressure Crystallography
(Eds.: A. Katrusiak, P. F. McMillan),
Dordrecht: Kluwer Acad. Publ., 2004 pp.157-168
;
_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  0.0683
_diffrn_reflns_av_sigmaI/netI    0.0239
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            3760
_diffrn_reflns_theta_full        29.20
_diffrn_reflns_theta_max         29.20
_diffrn_reflns_theta_min         2.64
_exptl_absorpt_coefficient_mu    2.777
_exptl_absorpt_correction_T_max  0.80
_exptl_absorpt_correction_T_min  0.59
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
Katrusiak, A. (2003). REDSHABS - Program for correcting
reflections intensities for DAC absorption, gasket shadowing
and sample crystal absorption. Adam Mickiewicz University, Pozna\'n.
Katrusiak, A. (2004). Z. Kristallogr. 219, 461-467
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.845
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.301
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     42
_refine_ls_number_reflns         328
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0413
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0436P)^2^+2.8141P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0841
_refine_ls_wR_factor_ref         0.0903
_reflns_number_gt                322
_reflns_number_total             328
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c001379j.txt
_cod_data_source_block           dabcoHI24
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        572.6(15)
_cod_original_sg_symbol_H-M      'P 21/m'
_cod_database_code               7212552