<small>L</small>-Leucylglycine 0.67-hydrate and [(4<i>S</i>)-2,2-dimethyl-4-(2-methylpropyl)-5-oxoimidazolidin-3-ium-1-yl]acetate
Kiyotani, Tamiko; Sugawara, Yoko; Acta Crystallographica Section C 68 (2012) o498–o501; doi:10.1107/S010827011204810X

data_2018728
_publ_section_title
;
 <small>L</small>-Leucylglycine 0.67-hydrate and
 [(4<i>S</i>)-2,2-dimethyl-4-(2-methylpropyl)-5-oxoimidazolidin-3-ium-1-yl]acetate
;
_journal_coeditor_code           UK3056
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o498
_journal_page_last               o501
_journal_paper_doi               10.1107/S010827011204810X
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C11 H20 N2 O3'
_chemical_formula_moiety         'C11 H20 N2 O3'
_chemical_formula_sum            'C11 H20 N2 O3'
_chemical_formula_weight         228.29
_chemical_name_systematic
;
[(4<i>S</i>)-2,2-dimethyl-4-(2-methylpropyl)-
5-oxoimidazolidin-3-ium-1-yl]acetate
;
_space_group_IT_number           1
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.202(11)
_cell_angle_beta                 98.272(8)
_cell_angle_gamma                107.193(11)
_cell_formula_units_Z            1
_cell_length_a                   6.0060(14)
_cell_length_b                   6.8782(18)
_cell_length_c                   7.9717(18)
_cell_measurement_reflns_used    871
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.0197
_cell_measurement_theta_min      5.4096
_cell_volume                     310.96(13)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2006)'
_computing_molecular_graphics    'Mercury (Macrae <i>et al</i>., 2006)'
_computing_publication_material
;
Yadokari-XG 2009 (Kabuto <i>et al</i>., 2009)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 14.2959
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Rigaku Mercury CCD area-detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0132
_diffrn_reflns_av_sigmaI/netI    0.0153
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            3600
_diffrn_reflns_theta_full        27.46
_diffrn_reflns_theta_max         27.46
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6608
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(CrystalClear; Rigaku/MSC, 2006)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             124
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.55
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.166
_refine_diff_density_min         -0.150
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     149
_refine_ls_number_reflns         2526
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0346
_refine_ls_R_factor_gt           0.0342
_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^)+(0.0586P)^2^+0.0404P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0926
_refine_ls_wR_factor_ref         0.0934
_reflns_number_gt                2501
_reflns_number_total             2526
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            uk3056.cif
_cod_data_source_block           II
_cod_database_code               2018728
_cod_database_fobs_code          2018728