A versatile synthesis of new pyrimidinyl nitronyl nitroxides
Brough, P.; Chiarelli, R.; Pécaut, J.; Rassat, A.; Rey, P.; Chemical Communications (Cambridge, United Kingdom)  (2003) 2722–2723; doi:10.1039/b309786b

data_7104883
_publ_section_title
;
 A versatile synthesis of new pyrimidinyl nitronyl nitroxides
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   21
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2722
_journal_page_last               2723
_journal_paper_doi               10.1039/b309786b
_journal_year                    2003
_chemical_formula_sum            'C14 H19 N2 O2'
_chemical_formula_weight         247.31
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.862(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.2438(5)
_cell_length_b                   21.3603(17)
_cell_length_c                   9.9984(8)
_cell_measurement_temperature    298(2)
_cell_volume                     1323.93(18)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.883
_diffrn_measured_fraction_theta_max 0.883
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0312
_diffrn_reflns_av_sigmaI/netI    0.0611
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            6664
_diffrn_reflns_theta_full        28.92
_diffrn_reflns_theta_max         28.92
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.241
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             532
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.5
_refine_diff_density_max         0.193
_refine_diff_density_min         -0.209
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.889
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         3093
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.889
_refine_ls_R_factor_all          0.0838
_refine_ls_R_factor_gt           0.0405
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0516P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0879
_refine_ls_wR_factor_ref         0.0971
_reflns_number_gt                1835
_reflns_number_total             3093
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b309786b.txt
_cod_data_source_block           struc
_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 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7104883