Conformational studies on substituted ε-caprolactams by X-ray crystallography and NMR spectroscopy
Gruber, Tobias; Thompson, Amber L.; Odell, Barbara; Bombicz, Petra; Schofield, Christopher J.; New J. Chem. 38 (2014) 5905–; doi:10.1039/C4NJ01339E

data_7054441
_publ_section_title
;
 Conformational studies on substituted \e-caprolactams by X-ray
 crystallography and NMR spectroscopy
;
_journal_issue                   12
_journal_name_full               'New J. Chem.'
_journal_page_first              5905
_journal_paper_doi               10.1039/C4NJ01339E
_journal_volume                  38
_journal_year                    2014
_chemical_formula_moiety         'C13 H21 N1 O5'
_chemical_formula_sum            'C13 H21 N O5'
_chemical_formula_weight         271.31
_chemical_melting_point          ?
_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   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             14-05-20
_audit_creation_method           CRYSTALS_ver_14.40
_cell_angle_alpha                90
_cell_angle_beta                 91.0045(16)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.27304(11)
_cell_length_b                   8.13334(11)
_cell_length_c                   27.2810(5)
_cell_measurement_reflns_used    6326
_cell_measurement_temperature    150
_cell_measurement_theta_max      76
_cell_measurement_theta_min      3
_cell_volume                     1391.68(4)
_computing_cell_refinement       'CrysAlis, (Oxford Diffraction, 2002)'
_computing_data_collection       'SuperNova, (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlis, (Oxford Diffraction, 2002)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.956
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Oxford Diffraction Gemini'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.028
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            13198
_diffrn_reflns_theta_full        66.500
_diffrn_reflns_theta_max         76.124
_diffrn_reflns_theta_min         3.240
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.826
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.65
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrysAlis, (Oxford Diffraction, 2002)'
_exptl_crystal_colour            clear_pale_colourless
_exptl_crystal_density_diffrn    1.295
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.33
_refine_diff_density_min         -0.23
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9877
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2766
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0422
_refine_ls_R_factor_gt           0.0349
_refine_ls_shift/su_max          0.0006295
_refine_ls_shift/su_mean         0.0001051
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.04P)^2^ + 0.45P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0901
_refine_ls_wR_factor_gt          0.0854
_refine_ls_wR_factor_ref         0.0899
_reflns_limit_h_max              7
_reflns_limit_h_min              -7
_reflns_limit_k_max              10
_reflns_limit_k_min              0
_reflns_limit_l_max              34
_reflns_limit_l_min              0
_reflns_number_gt                2364
_reflns_number_total             2770
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.10
_oxford_diffrn_Wilson_scale      0.03
_oxford_refine_ls_r_factor_ref   0.0422
_oxford_refine_ls_scale          6.37(14)
_oxford_reflns_number_all        2767
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_oxford_structure_analysis_title 6291
_cod_data_source_file            c4nj01339e2.cif
_cod_data_source_block           3
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 2827 2014-09-09 07:05:25Z andrius 

 Adding full bibliography for 7054439--7054445.cif.

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 1 21/n 1 '
_cod_original_formula_sum        'C13 H21 N1 O5'
_cod_database_code               7054441