Computational and analytical approaches for investigating hydrates: the neat and hydrated solid-state forms of 3-(3-methylimidazolium-1-yl)propanoate
Braun, Doris E.; Lampl, Martin; Wurst, Klaus; Kahlenberg, Volker; Griesser, Ulrich J.; Schottenberger, Herwig; CrystEngComm 20 (2018) 7826–; doi:10.1039/C8CE01565A

data_7231738
_publ_section_title
;
 Computational and analytical approaches for investigating hydrates: the
 neat and hydrated solid-state forms of
 3-(3-methylimidazolium-1-yl)propanoate
;
_journal_issue                   48
_journal_name_full               CrystEngComm
_journal_page_first              7826
_journal_paper_doi               10.1039/C8CE01565A
_journal_volume                  20
_journal_year                    2018
_chemical_formula_moiety         'C7 H10 N2 O2, 2(H2 O)'
_chemical_formula_sum            'C7 H14 N2 O4'
_chemical_formula_weight         190.2
_chemical_melting_point          334
_chemical_name_systematic
;
 3-(3-methylimidazolium-1-yl)propanoate dihydrate
;
_chemical_properties_physical    Hygroscopic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2017-12-23T17:14:16-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2018-09-12 deposited with the CCDC.
2018-10-30 downloaded from the CCDC.
;
_cell_angle_alpha                113.2550(10)
_cell_angle_beta                 105.1800(10)
_cell_angle_gamma                95.990(2)
_cell_formula_units_Z            2
_cell_length_a                   7.3825(4)
_cell_length_b                   8.4170(4)
_cell_length_c                   8.8371(4)
_cell_measurement_reflns_used    13851
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      25.7
_cell_measurement_theta_min      2.6
_cell_measurement_wavelength     0.71073
_cell_volume                     473.36(4)
_computing_cell_refinement       'Bruker SAINT-V 8.34A'
_computing_data_collection       'Bruker Apex II'
_computing_data_reduction        'Bruker SAINT-V 8.34A'
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      183(2)
_diffrn_detector_area_resol_mean 10.4
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device_type  'Bruker D8 QUEST PHOTON 100'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multi layered optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0307
_diffrn_reflns_av_unetI/netI     0.0103
_diffrn_reflns_Laue_measured_fraction_full 1
_diffrn_reflns_Laue_measured_fraction_max 1
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            13851
_diffrn_reflns_point_group_measured_fraction_full 1
_diffrn_reflns_point_group_measured_fraction_max 1
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.737
_diffrn_reflns_theta_min         2.659
_diffrn_source                   'Incoatec Microfocus'
_exptl_absorpt_coefficient_mu    0.109
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             204
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: methanol/diethyl ether'
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.255
_refine_diff_density_min         -0.2
_refine_diff_density_rms         0.04
_refine_ls_extinction_coef       0.159(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1801
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.0373
_refine_ls_R_factor_gt           0.0342
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0439P)^2^+0.1858P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0911
_refine_ls_wR_factor_ref         0.0937
_reflns_number_gt                1662
_reflns_number_total             1801
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce01565a2.cif
_cod_data_source_block           shelx
_cod_depositor_comments
'Adding full bibliography for 7231738--7231741.cif.'
_cod_database_code               7231738
_shelx_estimated_absorpt_t_min   0.981
_shelx_estimated_absorpt_t_max   0.987