Monomer, dimers and trimers of cyanogen N-oxide, NC–CN→ O. An X-ray, FVT-MS/IR and theoretical investigation
Barbieux-Flammang, Monique; Vandevoorde, Séverine; Flammang, Robert; Wong, Ming Wah; Bibas, Hervé; Kennard, Colin H. L.; Wentrup, Curt; Journal of the Chemical Society, Perkin Transactions 2  (2000) 473–; doi:10.1039/a908653f

data_7203942
_publ_section_title
;
 Monomer, dimers and trimers of cyanogen N-oxide,
 N&#xE007;C--C&#xE007;N\\rightarrow O. An X-ray, FVT-MS/IR and
 theoretical investigation
;
_journal_issue                   3
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              473
_journal_paper_doi               10.1039/a908653f
_journal_year                    2000
_chemical_formula_sum            'C6 N6 O3'
_chemical_formula_weight         204.12
_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
_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            8
_cell_length_a                   11.198(4)
_cell_length_b                   9.393(2)
_cell_length_c                   15.277(4)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12
_cell_measurement_theta_min      10
_cell_volume                     1606.9(8)
_computing_cell_refinement       CAD4
_computing_data_collection       CAD4
_computing_data_reduction        XTAL3.2
_computing_molecular_graphics    PLATON
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.861
_diffrn_measured_fraction_theta_max 0.861
_diffrn_measurement_device_type  'Enraf Nonius CAD4'
_diffrn_measurement_method       'omega 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  0.0370
_diffrn_reflns_av_sigmaI/netI    0.1769
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            1431
_diffrn_reflns_theta_full        24.97
_diffrn_reflns_theta_max         24.97
_diffrn_reflns_theta_min         2.67
_diffrn_standards_interval_time  120
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.141
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.687
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.454
_refine_diff_density_min         -0.489
_refine_diff_density_rms         0.160
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.963
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1404
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.963
_refine_ls_R_factor_all          0.2762
_refine_ls_R_factor_gt           0.0928
_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^)+(0.1141P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2057
_refine_ls_wR_factor_ref         0.3034
_reflns_number_gt                419
_reflns_number_total             1404
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            a908653f.txt
_cod_data_source_block           cw4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.1141P)^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^)+(0.1141P)^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      Pbca
_cod_database_code               7203942