Dimorphism in 3'-aminocyclohexanespiro-5'-hydantoin
Boris Shivachev; Rosica Petrova; Emilia Naydenova; Acta Crystallographica Section C 61 (2005) o524–o526; doi:10.1107/S0108270105016033

data_2014974
_publ_section_title
;
 Dimorphism in 3'-aminocyclohexanespiro-5'-hydantoin
;
_journal_coeditor_code           FA1115
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o524
_journal_page_last               o526
_journal_paper_doi               10.1107/S0108270105016033
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C8 H13 N3 O2'
_chemical_formula_moiety         'C8 H13 N3 O2'
_chemical_formula_sum            'C8 H13 N3 O2'
_chemical_formula_weight         183.21
_chemical_melting_point          438
_chemical_name_common            3-amino-cyclohexanspiro-5-hydantoin
_chemical_name_systematic
;
3-amino-1,3-diazaspiro[4.5]decane-2,4-dione or
1'-aminocyclohexanespiro-4'-imidazole-2',5'(3'H,4'H)-dione
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 91.621(14)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   14.0813(13)
_cell_length_b                   10.2094(19)
_cell_length_c                   12.372(3)
_cell_measurement_reflns_used    22
_cell_measurement_temperature    290(2)
_cell_measurement_theta_max      17.72
_cell_measurement_theta_min      16.74
_cell_volume                     1777.9(6)
_computing_cell_refinement       'CAD-4 EXPRESS'
_computing_data_collection       'CAD-4 EXPRESS (Enraf--Nonius, 1994)'
_computing_data_reduction        'XCAD4 (Harms & Wocadlo, 1995)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      290(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Enraf-Nonius CAD-4'
_diffrn_measurement_method       'non-profiled \w/2\q'
_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  0.0756
_diffrn_reflns_av_sigmaI/netI    0.0877
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7138
_diffrn_reflns_theta_full        26.02
_diffrn_reflns_theta_max         26.02
_diffrn_reflns_theta_min         1.45
_diffrn_standards_decay_%        3
_diffrn_standards_interval_count 500
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.364
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             784
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.170
_refine_diff_density_min         -0.215
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.989
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         3509
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.989
_refine_ls_R_factor_all          0.1193
_refine_ls_R_factor_gt           0.0498
_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^)+(0.0418P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0975
_refine_ls_wR_factor_ref         0.1184
_reflns_number_gt                1946
_reflns_number_total             3509
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            fa1115.cif
_cod_data_source_block           I
_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 2.4.1 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      'P 21/c'
_cod_database_code               2014974