#------------------------------------------------------------------------------
#$Date: 2011-09-10 04:16:28 +0100 (Sat, 10 Sep 2011) $
#$Revision: 25271 $
#$URL: svn://www.crystallography.net/cod/cif/2/2204970.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2204970
loop_
_publ_author_name
'Pitchumony, Tamil Selvi'
'Stoeckli-Evans, Helen'
_publ_section_title
;
 An orthorhombic polymorph of naphthalene-2,3-dicarbonitrile
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o40
_journal_page_last               o41
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C12 H6 N2'
_chemical_formula_moiety         'C12 H6 N2'
_chemical_formula_sum            'C12 H6 N2'
_chemical_formula_weight         178.19
_chemical_name_systematic
;
naphthalene-2,3-dicarbonitrile
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   3.8144(5)
_cell_length_b                   12.175(2)
_cell_length_c                   18.806(3)
_cell_measurement_reflns_used    6447
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      26.07
_cell_measurement_theta_min      1.67
_cell_volume                     873.4(2)
_computing_cell_refinement       X-AREA
_computing_data_collection       'X-AREA (Stoe & Cie, 2004)'
_computing_data_reduction        'X-RED32 (Stoe & Cie, 2004)'
_computing_molecular_graphics    'PLATON  (Spek, 2003)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 0.81\%A
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'Stoe IPDS-II'
_diffrn_measurement_method       '\f or \w scans?'
_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  0.0659
_diffrn_reflns_av_sigmaI/netI    0.0319
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            6296
_diffrn_reflns_theta_full        26.07
_diffrn_reflns_theta_max         26.07
_diffrn_reflns_theta_min         1.99
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_meas      none
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.118
_refine_diff_density_min         -0.142
_refine_ls_abs_structure_details 'none; Friedel pairs merged'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.869
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     151
_refine_ls_number_reflns         1054
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.869
_refine_ls_R_factor_all          0.0435
_refine_ls_R_factor_gt           0.0373
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w1/[\s^2^(Fo^2^)+(0.0678P)^2^] where P(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0991
_refine_ls_wR_factor_ref         0.1048
_reflns_number_gt                915
_reflns_number_total             1054
_reflns_threshold_expression     I>2\s(I)
_[local]_cod_data_source_file    sj6037.cif
_[local]_cod_data_source_block   I
_cod_database_code               2204970
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, -y, z+1/2'
'x+1/2, -y+1/2, -z'
'-x, y+1/2, -z+1/2'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_occupancy
_atom_site_type_symbol
N1 0.5375(5) 0.36284(13) 0.31544(8) 0.0492(5) Uani d 1 N
N2 0.2937(5) 0.67649(13) 0.33499(9) 0.0492(4) Uani d 1 N
C1 -0.0198(5) 0.62915(14) 0.16283(9) 0.0376(4) Uani d 1 C
H1 -0.093(6) 0.7065(18) 0.1693(9) 0.036(5) Uiso d 1 H
C2 0.1440(5) 0.57532(14) 0.21771(9) 0.0363(4) Uani d 1 C
C3 0.2388(5) 0.46213(14) 0.20996(9) 0.0367(4) Uani d 1 C
C4 0.1722(5) 0.40828(15) 0.14776(10) 0.0387(4) Uani d 1 C
H4 0.243(6) 0.3321(17) 0.1415(10) 0.039(5) Uiso d 1 H
C5 -0.0706(6) 0.40796(17) 0.02555(10) 0.0447(5) Uani d 1 C
H5 -0.016(7) 0.3286(19) 0.0198(11) 0.055(6) Uiso d 1 H
C6 -0.2324(6) 0.46300(18) -0.02889(11) 0.0502(5) Uani d 1 C
H6 -0.282(8) 0.427(2) -0.0739(13) 0.060(7) Uiso d 1 H
C7 -0.3309(6) 0.57365(19) -0.02107(11) 0.0485(5) Uani d 1 C
H7 -0.435(7) 0.610(2) -0.0627(13) 0.068(7) Uiso d 1 H
C8 -0.2647(6) 0.62829(16) 0.04127(10) 0.0427(5) Uani d 1 C
H8 -0.341(6) 0.7043(19) 0.0479(10) 0.044(5) Uiso d 1 H
C9 -0.0951(5) 0.57420(14) 0.09836(9) 0.0380(4) Uani d 1 C
C10 0.0024(5) 0.46204(15) 0.09042(9) 0.0388(4) Uani d 1 C
C11 0.4059(5) 0.40701(14) 0.26844(10) 0.0390(4) Uani d 1 C
C12 0.2243(6) 0.63200(14) 0.28299(9) 0.0401(4) Uani d 1 C
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
N1 0.0576(11) 0.0388(8) 0.0512(9) 0.0007(8) -0.0056(9) 0.0027(7)
N2 0.0583(11) 0.0386(8) 0.0509(9) 0.0008(8) -0.0035(9) -0.0034(7)
C1 0.0365(9) 0.0295(7) 0.0469(9) -0.0003(8) 0.0038(9) 0.0020(6)
C2 0.0354(9) 0.0325(8) 0.0410(9) -0.0035(7) 0.0043(7) 0.0004(7)
C3 0.0355(9) 0.0320(8) 0.0427(9) -0.0008(8) 0.0017(8) 0.0034(6)
C4 0.0390(10) 0.0298(8) 0.0473(10) -0.0018(8) 0.0038(8) 0.0005(7)
C5 0.0439(10) 0.0427(9) 0.0476(10) -0.0005(9) 0.0018(9) -0.0057(8)
C6 0.0446(11) 0.0631(13) 0.0428(10) -0.0019(11) -0.0001(9) -0.0046(8)
C7 0.0427(11) 0.0590(12) 0.0438(10) 0.0005(10) 0.0028(9) 0.0064(9)
C8 0.0394(11) 0.0430(10) 0.0458(10) 0.0012(9) 0.0022(9) 0.0074(8)
C9 0.0357(9) 0.0355(9) 0.0429(9) -0.0010(8) 0.0047(8) 0.0031(7)
C10 0.0365(10) 0.0368(9) 0.0431(9) -0.0023(9) 0.0040(8) -0.0002(7)
C11 0.0401(10) 0.0307(7) 0.0463(9) -0.0026(8) 0.0003(9) 0.0011(7)
C12 0.0422(11) 0.0320(8) 0.0460(10) 0.0004(8) 0.0011(9) 0.0006(7)
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C2 C1 C9 120.74(15)
C2 C1 H1 119.4(11)
C9 C1 H1 119.9(11)
C1 C2 C3 119.85(16)
C1 C2 C12 120.56(15)
C3 C2 C12 119.58(17)
C4 C3 C2 120.16(16)
C4 C3 C11 120.93(15)
C2 C3 C11 118.91(16)
C3 C4 C10 120.99(15)
C3 C4 H4 120.6(12)
C10 C4 H4 118.4(12)
C6 C5 C10 120.37(18)
C6 C5 H5 119.2(12)
C10 C5 H5 120.3(12)
C5 C6 C7 120.70(19)
C5 C6 H6 121.1(15)
C7 C6 H6 118.2(15)
C8 C7 C6 120.3(2)
C8 C7 H7 122.6(15)
C6 C7 H7 117.0(15)
C7 C8 C9 120.45(18)
C7 C8 H8 120.9(12)
C9 C8 H8 118.6(12)
C8 C9 C1 121.52(16)
C8 C9 C10 119.09(17)
C1 C9 C10 119.39(16)
C5 C10 C4 122.08(16)
C5 C10 C9 119.07(17)
C4 C10 C9 118.85(16)
N1 C11 C3 179.5(2)
N2 C12 C2 178.9(2)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
N1 C11 1.150(2)
N2 C12 1.149(2)
C1 C2 1.373(3)
C1 C9 1.414(2)
C1 H1 0.99(2)
C2 C3 1.432(2)
C2 C12 1.441(2)
C3 C4 1.365(3)
C3 C11 1.437(3)
C4 C10 1.418(3)
C4 H4 0.97(2)
C5 C6 1.371(3)
C5 C10 1.414(3)
C5 H5 1.00(2)
C6 C7 1.406(3)
C6 H6 0.97(2)
C7 C8 1.371(3)
C7 H7 0.98(3)
C8 C9 1.416(3)
C8 H8 0.98(2)
C9 C10 1.423(2)
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_site_symmetry_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
C1 H1 N1 4_555 0.99(2) 2.57(2) 3.487(2) 154.7(16)
C4 H4 N2 4_645 0.97(2) 2.63(2) 3.496(3) 148.6(16)
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
C9 C1 C2 C3 -0.3(3)
C9 C1 C2 C12 179.22(17)
C1 C2 C3 C4 1.2(3)
C12 C2 C3 C4 -178.34(18)
C1 C2 C3 C11 -179.20(18)
C12 C2 C3 C11 1.3(3)
C2 C3 C4 C10 -1.4(3)
C11 C3 C4 C10 179.00(17)
C10 C5 C6 C7 -0.5(3)
C5 C6 C7 C8 0.3(3)
C6 C7 C8 C9 0.3(3)
C7 C8 C9 C1 179.15(18)
C7 C8 C9 C10 -0.6(3)
C2 C1 C9 C8 179.82(18)
C2 C1 C9 C10 -0.4(3)
C6 C5 C10 C4 -179.41(18)
C6 C5 C10 C9 0.1(3)
C3 C4 C10 C5 -179.76(18)
C3 C4 C10 C9 0.7(3)
C8 C9 C10 C5 0.4(3)
C1 C9 C10 C5 -179.37(18)
C8 C9 C10 C4 179.98(18)
C1 C9 C10 C4 0.2(3)