Charge transfer, proton transfer and clathrate compounds of dihydrotetracyanodiphenoquinodimethane (H2TCNDQ) having highly acidic protonsElectronic supplementary information (ESI) available: elemental analysis results for H2TCNDQ complexes. See http://www.rsc.org/suppdata/jm/b1/b109503j/
Nishimura, Kazukuni; Khasanov, Salavat S.; Saito, Gunzi; Journal of Materials Chemistry 12 (2002) 1693–; doi:10.1039/b109503j

data_7204289
_publ_section_title
;
 Charge transfer, proton transfer and clathrate compounds of
 dihydrotetracyanodiphenoquinodimethane (H2TCNDQ) having highly acidic
 protonsElectronic supplementary information (ESI) available: elemental
 analysis results for H2TCNDQ complexes. See
 http://www.rsc.org/suppdata/jm/b1/b109503j/
;
_journal_issue                   6
_journal_name_full               'Journal of Materials Chemistry'
_journal_page_first              1693
_journal_paper_doi               10.1039/b109503j
_journal_volume                  12
_journal_year                    2002
_chemical_formula_moiety         'C18 H10 N4'
_chemical_formula_sum            'C18 H10 N4'
_chemical_formula_weight         282.30
_chemical_melting_point          453.15
_chemical_name_common            H2TCNDQ
_chemical_name_systematic
; 
dihydro-tetracyanoquinodiphenoquinodimethane 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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
_cell_angle_beta                 98.639(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.255(5)
_cell_length_b                   7.0840(12)
_cell_length_c                   8.2600(17)
_cell_measurement_reflns_used    33
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      0
_cell_volume                     1461.0(5)
_computing_cell_refinement       'MXC(MAC Science)'
_computing_data_collection       'MXC(MAC Science)'
_computing_data_reduction        Crystan
_computing_molecular_graphics    'ORTEP III'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR92
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.959
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  'Mac Science DIP-2020K'
_diffrn_measurement_method       theta/2theta
_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    0.0283
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            1441
_diffrn_reflns_theta_full        26.36
_diffrn_reflns_theta_max         26.36
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    0.069
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            pale-purple
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.114
_refine_diff_density_min         -0.151
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.105
_refine_ls_hydrogen_treatment    'refall (H5) / noref (other hydrogen atoms)'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     108
_refine_ls_number_reflns         1441
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.105
_refine_ls_R_factor_all          0.0873
_refine_ls_R_factor_gt           0.0589
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0566P)^2^+0.7764P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1421
_refine_ls_wR_factor_ref         0.1591
_reflns_number_gt                969
_reflns_number_total             1441
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b109503j.txt
_cod_data_source_block           H2TCNDQ
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '180 degree C' was changed to
'453.15' - it was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7204289