N-Alkyl-p-nitroanilines: impact of alkyl chain length on crystal structures and optical SHG
Gangopadhyay, P.; Venugopal Rao, S.; Narayana Rao, D.; Radhakrishnan, T. P.; Journal of Materials Chemistry 9 (1999) 1699–; doi:10.1039/a901591d

data_7213042
_publ_section_title
;
 N-Alkyl-p-nitroanilines: impact of alkyl chain length on crystal
 structures and optical SHG
;
_journal_issue                   8
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              1699
_journal_paper_doi               10.1039/a901591d
_journal_volume                  9
_journal_year                    1999
_chemical_formula_moiety         'C11 H16 N2 O2'
_chemical_formula_sum            'C11 H16 N2 O2'
_chemical_formula_weight         208.26
_chemical_name_systematic        N-Pentyl-4-nitroaniline
_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(13)
_cell_angle_beta                 97.52(4)
_cell_angle_gamma                90.00(13)
_cell_formula_units_Z            4
_cell_length_a                   6.192(3)
_cell_length_b                   15.61(7)
_cell_length_c                   11.851(6)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      1.5
_cell_volume                     1136(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.957
_diffrn_measured_fraction_theta_max 0.957
_diffrn_measurement_device_type  'Enraf-Nonius MACH3'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0230
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            2725
_diffrn_reflns_theta_full        27.99
_diffrn_reflns_theta_max         27.99
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    0.085
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.218
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prismatic
_exptl_crystal_F_000             448
_exptl_crystal_size_max          0.84mm
_exptl_crystal_size_mid          0.64mm
_exptl_crystal_size_min          0.60mm
_refine_diff_density_max         0.15
_refine_diff_density_min         -0.17
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.259
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     137
_refine_ls_number_reflns         2725
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.259
_refine_ls_R_factor_all          0.0753
_refine_ls_R_factor_gt           0.0460
_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^)+(0.0800P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1338
_refine_ls_wR_factor_ref         0.1627
_reflns_number_gt                1627
_reflns_number_total             2725
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            901591dsup1.cif
_cod_data_source_block           npna
_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 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0800P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0800P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'p_21/c ( -p_2ybc)'
_cod_database_code               7213042