Role of weak hydrogen bonds in the crystal structures of phenazine, 5,10-dihydrophenazine and their 1:1 and 3:1 molecular complexes
Thalladi, Venkat R.; Smolka, Tanja; Gehrke, Annette; Boese, Roland; Sustmann, Reiner; New Journal of Chemistry 24 (2000) 143–; doi:10.1039/a908744c

data_7051256
_publ_section_title
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 Role of weak hydrogen bonds in the crystal structures of phenazine,
 5,10-dihydrophenazine and their 1:1 and 3:1 molecular complexes
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_journal_issue                   3
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              143
_journal_paper_doi               10.1039/a908744c
_journal_volume                  24
_journal_year                    2000
_chemical_formula_moiety         'C12 H10 N2'
_chemical_formula_sum            'C12 H10 N2'
_chemical_formula_weight         182.22
_chemical_name_common            5,10-Dihydrophenazine
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
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_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.7727(14)
_cell_length_b                   7.5924(9)
_cell_length_c                   21.775(3)
_cell_measurement_reflns_used    50
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      20
_cell_volume                     1781.0(4)
_computing_cell_refinement       'SIEMENS SHELXL-97 UNIX Vers. Release97-1'
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_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.623
_diffrn_measured_fraction_theta_max 0.623
_diffrn_measurement_device_type  'Nicolet R3m/V four circle diffractometer'
_diffrn_measurement_method       'Wyckoff scan mode'
_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  0.0203
_diffrn_reflns_av_sigmaI/netI    0.0244
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_exptl_absorpt_coefficient_mu    0.082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.41
_refine_diff_density_max         0.181
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_refine_ls_extinction_coef       0.0058(10)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
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_refine_ls_number_reflns         1458
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.004
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0349
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0613P)^2^+0.4046P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_refine_ls_wR_factor_ref         0.1017
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_cod_data_source_block           compound-2
_cod_depositor_comments
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The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' 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 

The following automatic conversions were performed:

'_symmetry_cell_setting' tag value 'orhorhombic' was replaced with
'orthorhombic' value as specified in the replacement file
'/home/robertas/cod-tools/perl-scripts/inputs/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0613P)^2^+0.4046P] 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^)+(0.0613P)^2^+0.4046P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
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_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               7051256