Synthesis and reduction kinetics of sterically shielded pyrrolidine nitroxides.
Paletta, Joseph T.; Pink, Maren; Foley, Bridget; Rajca, Suchada; Rajca, Andrzej; Organic letters 14 (2012) 5322–5325; doi:10.1021/ol302506f

data_1508700
_publ_section_title
;
 Synthesis and reduction kinetics of sterically shielded pyrrolidine
 nitroxides.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              5322
_journal_page_last               5325
_journal_paper_doi               10.1021/ol302506f
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C15 H24 N O2'
_chemical_formula_sum            'C15 H24 N O2'
_chemical_formula_weight         250.35
_chemical_name_systematic
; 
 ? 
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.417(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.5624(12)
_cell_length_b                   11.0144(11)
_cell_length_c                   10.9255(11)
_cell_measurement_reflns_used    5569
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      29.58
_cell_measurement_theta_min      2.59
_cell_volume                     1347.6(2)
_computing_cell_refinement       'APEX II v2010.11.3 (Bruker, 2010)'
_computing_data_collection       'APEX II v2010.11.3 (Bruker, 2010)'
_computing_data_reduction        'APEX II v2010.11.3 (Bruker, 2010)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2010)'
_computing_publication_material  'SHELXTL (Bruker, 2010)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2010)'
_computing_structure_solution    'SIR-2004 (Burla et al., 2005)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 83.33
_diffrn_detector_type            'Bruker APEXII'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_details
'0.50 degree frames measured for 15 seconds each'
_diffrn_measurement_device       'APEX Kappa Duo'
_diffrn_measurement_device_type  Kappa
_diffrn_measurement_method       'omega and phi 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  0.0246
_diffrn_reflns_av_sigmaI/netI    0.0240
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            14577
_diffrn_reflns_theta_full        29.59
_diffrn_reflns_theta_max         29.59
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9920
_exptl_absorpt_correction_T_min  0.9785
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing; 1995'
_exptl_crystal_colour            yellow-brown
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             548
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.369
_refine_diff_density_min         -0.144
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         3776
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0509
_refine_ls_R_factor_gt           0.0389
_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^)+(0.0523P)^2^+0.2561P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0989
_refine_ls_wR_factor_ref         0.1065
_reflns_number_gt                3070
_reflns_number_total             3776
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol302506f_si_003.cif
_cod_data_source_block           11082
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'P2(1)/c  '
_cod_database_code               1508700