Crystal structures of ten enantiopure Schiff bases bearing a naphthyl group
Hernández-Téllez, Guadalupe; Moreno, Gloria E.; Bernès, Sylvain; Mendoza, Angel; Portillo, Oscar; Sharma, Pankaj; Gutiérrez, René; Acta Crystallographica Section E Crystallographic Communications 72 (2016) 583–; doi:10.1107/S2056989016004692

data_2020455
_publ_section_title
;
 Crystal structures of ten enantiopure Schiff bases bearing a naphthyl
 group
;
_journal_coeditor_code           HB7571
_journal_issue                   4
_journal_name_full
'Acta Crystallographica Section E Crystallographic Communications'
_journal_page_first              583
_journal_paper_doi               10.1107/S2056989016004692
_journal_volume                  72
_journal_year                    2016
_chemical_formula_iupac          'C20 H19 N O'
_chemical_formula_moiety         'C20 H19 N O'
_chemical_formula_sum            'C20 H19 N O'
_chemical_formula_weight         289.36
_chemical_melting_point          384
_chemical_name_systematic
;
(<i>R</i>)-(--)-2-({[(4-Methoxylphenyl)ethyl]imino}methyl)naphthalene
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.1094(5)
_cell_length_b                   7.7266(7)
_cell_length_c                   34.225(4)
_cell_measurement_reflns_used    1762
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      52.0980
_cell_measurement_theta_min      5.1680
_cell_volume                     1615.6(3)
_computing_cell_refinement
;
CrysAlis PRO (Agilent, 2013)
;
_computing_data_collection
;
CrysAlis PRO (Agilent, 2013)
;
_computing_data_reduction
;
CrysAlis PRO (Agilent, 2013)
;
_computing_molecular_graphics
;
SHELXTL (Sheldrick, 2008)
;
_computing_publication_material
;
<i>CifTab</i> (Sheldrick, 2015)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS2013 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Agilent Xcalibur Atlas Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0678
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       41
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            14921
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         74.275
_diffrn_reflns_theta_min         5.169
_exptl_absorpt_coefficient_mu    0.566
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.77691
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(CrysAlis PRO; Agilent, 2013)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.190
_exptl_crystal_description       block
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.3929
_exptl_crystal_size_mid          0.2501
_exptl_crystal_size_min          0.2278
_refine_diff_density_max         0.146
_refine_diff_density_min         -0.196
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.081
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     201
_refine_ls_number_reflns         3223
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.081
_refine_ls_R_factor_all          0.1320
_refine_ls_R_factor_gt           0.0628
_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^)+(0.0500P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1222
_refine_ls_wR_factor_ref         0.1546
_reflns_number_gt                1652
_reflns_number_total             3223
_reflns_threshold_expression     'I > 2\s(I)'
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