<i>N</i>-(6-Amino-3,4-dihydro-3-methyl-5-nitroso-4-oxopyrimidin-2-yl) derivatives of glycine, valine, serine, threonine and methionine: interplay of molecular, molecular‒electronic and supramolecular structures
Low, John N.; Ferguson, George; Glidewell, Christopher; Acta Crystallographica Section B 56 (2000) 882–892; doi:10.1107/S0108768100005437

data_2102146
_publ_section_title
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 <i>N</i>-(6-Amino-3,4-dihydro-3-methyl-5-nitroso-4-oxopyrimidin-2-yl)
 derivatives of glycine, valine, serine, threonine and methionine:
 interplay of molecular, molecular--electronic and supramolecular
 structures
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              882
_journal_page_last               892
_journal_paper_doi               10.1107/S0108768100005437
_journal_volume                  56
_journal_year                    2000
_chemical_formula_moiety         'C10 H15 N5 O4'
_chemical_formula_sum            'C10 H15 N5 O4'
_chemical_formula_weight         269.27
_chemical_name_systematic
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 N-(6-Amino-3,4-dihydro-3-methyl-5-nitroso-4-oxopyrimidin-2-yl)
 Valine
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9136(6)
_cell_length_b                   11.2501(6)
_cell_length_c                   13.0585(12)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    294.0(10)
_cell_measurement_theta_max      18.93
_cell_measurement_theta_min      9.31
_cell_volume                     1309.49(16)
_computing_cell_refinement       'SET4 & CELDIM (Enraf-Nonius, 1992)'
_computing_data_collection       'CAD4 (Enraf-Nonius, 1992)'
_computing_data_reduction        'DATRD2 in NRCVAX96 (Gabe et al., 1989)'
_computing_molecular_graphics    'PLATON (Spek, 1999)'
_computing_publication_material
'SHELXL97  and WordPerfect macro PREP8 (Ferguson, 1998)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997b)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      294.0(10)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \q/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     .7093
_diffrn_reflns_av_R_equivalents  .019
_diffrn_reflns_av_sigmaI/netI    .020
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3011
_diffrn_reflns_theta_full        27.42
_diffrn_reflns_theta_max         27.42
_diffrn_reflns_theta_min         2.38
_diffrn_standards_decay_%        .7
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    .108
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  1.0000
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.366
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             568
_exptl_crystal_size_max          .42
_exptl_crystal_size_mid          .29
_exptl_crystal_size_min          .28
_refine_diff_density_max         .277
_refine_diff_density_min         -.252
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     185
_refine_ls_number_reflns         1738
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          .0567
_refine_ls_R_factor_gt           .0440
_refine_ls_shift/su_max          .000
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0782P)^2^+0.2134P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .1260
_reflns_number_gt                1375
_reflns_number_total             1738
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            na0105.cif
_cod_data_source_block           9878
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value
'w=1/[\s^2^(Fo^2^)+(0.0782P)^2^+0.2134P] where P=(Fo^2^+2Fc^2^)/3'
was changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0782P)^2^+0.2134P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_database_code               2102146