Two polymorphs, with <i>Z</i>' = 1 and 2, of 2-amino-4-chloro-6-morpholinopyrimidine in <i>P</i>2~1~/<i>c</i>, and 2-amino-4-chloro-6-piperidinopyrimidine, which is isomorphous and almost isostructural with the <i>Z</i>' = 2 polymorph
Bowes, Katharine F.; Glidewell, Christopher; Low, John N.; Melguizo, Manuel; Quesada, Antonio; Acta Crystallographica Section C 59 (2003) o4–o8; doi:10.1107/S0108270102020012

data_2013195
_publ_section_title
;
 Two polymorphs, with <i>Z</i>' = 1 and 2, of
 2-amino-4-chloro-6-morpholinopyrimidine in <i>P</i>2~1~/<i>c</i>, and
 2-amino-4-chloro-6-piperidinopyrimidine, which is isomorphous and
 almost isostructural with the <i>Z</i>' = 2 polymorph
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o4
_journal_page_last               o8
_journal_paper_doi               10.1107/S0108270102020012
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C8 H11 Cl N4 O'
_chemical_formula_moiety         'C8 H11 Cl N4 O'
_chemical_formula_sum            'C8 H11 Cl N4 O'
_chemical_formula_weight         214.66
_chemical_name_systematic
;
2-Amino-4-chloro-6-morpholinopyrimidine, Z' = 1 polymorph
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 96.4260(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4143(4)
_cell_length_b                   13.0869(4)
_cell_length_c                   7.5774(2)
_cell_measurement_reflns_used    2102
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.45
_cell_measurement_theta_min      3.11
_cell_volume                     927.70(5)
_computing_cell_refinement       'DENZO--SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'KappaCCD Server Software (Nonius, 1997)'
_computing_data_reduction        DENZO--SMN
_computing_molecular_graphics    'PLATON (Spek, 2002)'
_computing_publication_material  'SHELXL97 and PRPKAPPA (Ferguson, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans, and \w scans with \k offsets'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.046
_diffrn_reflns_av_sigmaI/netI    0.0434
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            6031
_diffrn_reflns_theta_full        27.45
_diffrn_reflns_theta_max         27.45
_diffrn_reflns_theta_min         3.11
_diffrn_standards_decay_%        negligible
_exptl_absorpt_coefficient_mu    0.383
_exptl_absorpt_correction_T_max  0.941
_exptl_absorpt_correction_T_min  0.856
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(DENZO--SMN; Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.537
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.345
_refine_diff_density_min         -0.378
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     127
_refine_ls_number_reflns         2102
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0497
_refine_ls_R_factor_gt           0.0361
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0371P)^2^+0.4718P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0853
_refine_ls_wR_factor_ref         0.0918
_reflns_number_gt                1705
_reflns_number_total             2102
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk1595.cif
_cod_data_source_block           Ia
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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               2013195
_cod_database_fobs_code          2013195