Monoclinic-to-orthorhombic phase transition of the hexamethylenetetramine–2-methylbenzoic acid (1/2) cocrystal with temperature-dependent dynamic molecular disorder
Chia, Tze Shyang; Quah, Ching Kheng; Acta Crystallographica Section C 72 (2016) 971–980; doi:10.1107/S2053229616016831

data_2020668
_publ_section_title
;
 Monoclinic-to-orthorhombic phase transition of the
 hexamethylenetetramine--2-methylbenzoic acid (1/2) cocrystal with
 temperature-dependent dynamic molecular disorder
;
_journal_coeditor_code           EG3207
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              971
_journal_page_last               980
_journal_paper_doi               10.1107/S2053229616016831
_journal_volume                  72
_journal_year                    2016
_chemical_formula_iupac          'C6 H12 N4, 2C8 H8 O2'
_chemical_formula_moiety         'C6 H12 N4, 2(C8 H8 O2)'
_chemical_formula_sum            'C22 H28 N4 O4'
_chemical_formula_weight         412.48
_chemical_name_common
;
Hexamethylenetetramine bis(<i>o</i>-toluic acid)
;
_chemical_name_systematic
;
Hexamethylenetetramine--2-methylbenzoic acid (1/2)
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
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_cell_angle_beta                 90.0906(12)
_cell_angle_gamma                90
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_cell_length_a                   30.9991(17)
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_cell_length_c                   14.3546(8)
_cell_measurement_reflns_used    9880
_cell_measurement_temperature    163.00(10)
_cell_measurement_theta_max      27.09
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_cell_volume                     4165.5(4)
_computing_cell_refinement
;
SAINT (Bruker, 2009)
;
_computing_data_collection
;
APEX2 (Bruker, 2009)
;
_computing_data_reduction
;
SAINT (Bruker, 2009)
;
_computing_molecular_graphics
;
SHELXTL (Sheldrick, 2008<i>a</i>) and Mercury (Macrae <i>et al.</i>,
2006)
;
_computing_publication_material
;
PLATON (Spek, 2009)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015)
;
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;
SHELXS2013 (Sheldrick, 2008<i>a</i>)
;
_diffrn_ambient_temperature      163.00(10)
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_diffrn_radiation_monochromator  graphite
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_diffrn_radiation_type           MoK\a
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_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            66066
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_diffrn_reflns_theta_min         0.657
_exptl_absorpt_coefficient_mu    0.092
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_exptl_absorpt_correction_T_min  0.9149
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(<i>SADABS</i>; Bruker, 2009)
;
_exptl_crystal_colour            colourless
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_exptl_crystal_description       block
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_exptl_crystal_size_max          0.432
_exptl_crystal_size_mid          0.173
_exptl_crystal_size_min          0.151
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_refine_diff_density_min         -0.194
_refine_ls_extinction_method     none
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_refine_ls_number_restraints     1222
_refine_ls_restrained_S_all      0.981
_refine_ls_R_factor_all          0.0743
_refine_ls_R_factor_gt           0.0529
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0704P)^2^+1.4929P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_refine_ls_wR_factor_ref         0.1502
_reflns_number_gt                7515
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_reflns_threshold_expression     'I > 2\s(I)'
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_cod_depositor_comments
'Adding full bibliography for 2020665--2020673.cif.'
_cod_database_code               2020668
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_shelx_estimated_absorpt_t_min   0.961
_shelx_estimated_absorpt_t_max   0.986
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