3-Amino-4'-methyl-5-ethylbiphenyl-2,4-dicarbonitrile and 3-amino-4'-(<i>N</i>,<i>N</i>-diethylamino)-5-ethylbiphenyl-2,4-dicarbonitrile
Subbiah Pandi, A.; Velmurugan, D.; Shanmuga Sundara Raj, S.; Fun, Hoong-Kun; Raghukumar, V.; Ramakrishnan, V.T.; Acta Crystallographica Section C 57 (2001) 723–725; doi:10.1107/S0108270101002128

data_2012004
_publ_section_title
;3-Amino-4'-methyl-5-ethylbiphenyl-2,4-dicarbonitrile and
 3-amino-4'-(<i>N</i>,<i>N</i>-diethylamino)-5-ethylbiphenyl-2,4-dicarbonitrile
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              723
_journal_page_last               725
_journal_paper_doi               10.1107/S0108270101002128
_journal_volume                  57
_journal_year                    2001
_chemical_formula_moiety         'C20 H22 N4'
_chemical_formula_sum            'C20 H22 N4'
_chemical_formula_weight         318.42
_chemical_name_systematic
;
3-amino-2,4 dicyano-5-ethyl-4'- N,N diethyl amino Biphenyl
;
_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'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.4960(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.8918(2)
_cell_length_b                   10.3458(2)
_cell_length_c                   16.5707(2)
_cell_measurement_reflns_used    5488
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.58
_cell_measurement_theta_min      1.83
_cell_volume                     1829.80(5)
_computing_cell_refinement       'SAINT (Siemens, 1996)'
_computing_data_collection       'SMART (Siemens, 1996)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'ZORTEP (Zsolnai, 1997)'
_computing_publication_material  'SHELXL97 and PARST (Nardelli, 1995)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full .931
_diffrn_measured_fraction_theta_max .931
_diffrn_measurement_device_type
;
Siemens SMART CCD area detector diffractometer
;
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .0791
_diffrn_reflns_av_sigmaI/netI    .1029
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12556
_diffrn_reflns_theta_full        28.36
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         1.91
_diffrn_standards_decay_%        <2
_exptl_absorpt_coefficient_mu    .070
_exptl_absorpt_correction_T_max  .9902
_exptl_absorpt_correction_T_min  .9724
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            pale_yellow
_exptl_crystal_density_diffrn    1.156
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rectangular
_exptl_crystal_F_000             680
_exptl_crystal_size_max          .40
_exptl_crystal_size_mid          .26
_exptl_crystal_size_min          .14
_refine_diff_density_max         .231
_refine_diff_density_min         -.227
_refine_ls_extinction_coef       .0115(15)
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         4478
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          .1397
_refine_ls_R_factor_gt           .0605
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0430P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .1449
_reflns_number_gt                2122
_reflns_number_total             4478
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bj1022.cif
_cod_data_source_block           II
_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 

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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2012004
_cod_database_fobs_code          2012004