Urotropine–2,2,3,3-tetramethylcyclopropanecarboxylic acid (1/1)
Hai Feng; Ya-Ping Lü; Hui-Min Zhang; Bing Tu; Zhi-Min Jin; Acta Crystallographica Section E 62 (2006) o3122–o3123; doi:10.1107/S1600536806024676

data_2209717
_publ_section_title
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 Urotropine--2,2,3,3-tetramethylcyclopropanecarboxylic acid (1/1)
;
_journal_coeditor_code           YA2015
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3122
_journal_page_last               o3123
_journal_paper_doi               10.1107/S1600536806024676
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C8 H14 O2, C6 H12 N4'
_chemical_formula_moiety         'C8 H14 O2, C6 H12 N4'
_chemical_formula_sum            'C14 H26 N4 O2'
_chemical_formula_weight         282.39
_chemical_name_systematic
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Urotropine--2,2,3,3-tetramethylcyclopropanecarboxylic acid (1/1)
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.881(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.2439(14)
_cell_length_b                   7.0715(9)
_cell_length_c                   42.491(6)
_cell_measurement_reflns_used    1501
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.9
_cell_measurement_theta_min      1.5
_cell_volume                     3055.9(7)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXTL (Bruker, 2000)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_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  0.028
_diffrn_reflns_av_sigmaI/netI    0.037
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -50
_diffrn_reflns_number            7802
_diffrn_reflns_theta_full        25.2
_diffrn_reflns_theta_max         25.2
_diffrn_reflns_theta_min         1.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.08
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_correction_T_min  0.969
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2000)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.27
_refine_diff_density_min         -0.35
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.24
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         2750
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.24
_refine_ls_R_factor_all          0.099
_refine_ls_R_factor_gt           0.081
_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^)+(0.0906P)^2^+2.4269P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.192
_refine_ls_wR_factor_ref         0.209
_reflns_number_gt                2320
_reflns_number_total             2758
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ya2015.cif
_cod_data_source_block           I
_cod_depositor_comments
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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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2209717
_cod_database_fobs_code          2209717