Amino-substituted O^6^-benzyl-5-nitrosopyrimidines: interplay of molecular, molecular-electronic and supramolecular structures
Quesada, Antonio; Marchal, Antonio; Melguizo, Manuel; Nogueras, Manuel; Sánchez, Adolfo; Low, John N.; Cannon, Debbie; Farrell, Dorcas M. M.; Glidewell, Christopher; Acta Crystallographica Section B 58 (2002) 300–315; doi:10.1107/S0108768101021607

data_2103286
_publ_section_title
;
 Amino-substituted O^6^-benzyl-5-nitrosopyrimidines: interplay of
 molecular, molecular-electronic and supramolecular structures
;
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              300
_journal_page_last               315
_journal_paper_doi               10.1107/S0108768101021607
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C23 H25 N5 O4'
_chemical_formula_sum            'C23 H25 N5 O4'
_chemical_formula_weight         435.48
_chemical_name_systematic
;
Ethyl N-(2-benzylamino-6-benzyloxy-5-nitrosopyrimidin-4-yl)-\b-alaninate
;
_space_group_IT_number           2
_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
_cell_angle_alpha                105.2210(13)
_cell_angle_beta                 104.6960(13)
_cell_angle_gamma                100.3720(12)
_cell_formula_units_Z            4
_cell_length_a                   8.6595(2)
_cell_length_b                   16.3567(4)
_cell_length_c                   16.9014(4)
_cell_measurement_reflns_used    9402
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.32
_cell_volume                     2154.96(9)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'Kappa-CCD server software (Nonius, 1997)'
_computing_data_reduction        'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'PLATON (Spek, 2001)'
_computing_publication_material
'SHELXL-97 (Sheldrick, 1997b) and PRPKAPPA (Ferguson, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997b)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.953
_diffrn_measured_fraction_theta_max 0.953
_diffrn_measurement_device_type  Kappa-CCD
_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  0.092
_diffrn_reflns_av_sigmaI/netI    0.0828
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            33749
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.32
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9953
_exptl_absorpt_correction_T_min  0.9632
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO-SMN (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            pink
_exptl_crystal_density_diffrn    1.342
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
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_refine_ls_extinction_method     none
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_refine_ls_number_reflns         9402
_refine_ls_number_restraints     0
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_refine_ls_R_factor_gt           0.0667
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1133P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_number_gt                5874
_reflns_number_total             9402
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            na0133.cif
_cod_data_source_block           7
_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_enum 1527 2010-12-29 10:47:43Z saulius 

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_cell_volume        2154.95(9)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               2103286
_cod_database_fobs_code          2103286