A rigid sublimable naphthalenediimide cyclophane as model compound for UHV STM experiments.
Gabutti, Sandro; Knutzen, Marco; Neuburger, Markus; Schull, Guillaume; Berndt, Richard; Mayor, Marcel; Chemical communications (Cambridge, England)  (2008) 2370–2372; doi:10.1039/b719796a

data_7103128
_publ_section_title
;
 A rigid sublimable naphthalenediimide cyclophane as model compound for
 UHV STM experiments.
;
_journal_issue                   20
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2370
_journal_page_last               2372
_journal_paper_doi               10.1039/b719796a
_journal_year                    2008
_chemical_formula_moiety
'C52 H40 N4 O8, C8 H10, 0.6(C9 H12), 0.4(C8 H10)'
_chemical_formula_sum            'C68.6 H61.2 N4 O8'
_chemical_formula_weight         1069.66
_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'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             07-04-11
_audit_creation_method           CRYSTALS_ver_12.84
_cell_angle_alpha                90
_cell_angle_beta                 92.6081(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.7349(2)
_cell_length_b                   16.9022(2)
_cell_length_c                   19.1495(2)
_cell_measurement_reflns_used    27057
_cell_measurement_temperature    173
_cell_measurement_theta_max      28
_cell_measurement_theta_min      3
_cell_volume                     5734.29(11)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      173
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.033
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            50388
_diffrn_reflns_theta_full        27.858
_diffrn_reflns_theta_max         27.858
_diffrn_reflns_theta_min         3.062
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.97
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.239
_exptl_crystal_description       block
_exptl_crystal_F_000             2259.200
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.32
_refine_diff_density_max         1.12
_refine_diff_density_min         -0.46
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0531
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     802
_refine_ls_number_reflns         9239
_refine_ls_number_restraints     186
_refine_ls_R_factor_all          0.1040
_refine_ls_R_factor_gt           0.0839
_refine_ls_shift/su_max          0.001133
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982)
[weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)]
where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax
Method = Robust Weighting (Prince, 1982)
W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^
A~i~ are:
1.24 -0.530 0.389 -0.723
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0867
_refine_ls_wR_factor_gt          0.0794
_refine_ls_wR_factor_ref         0.0794
_reflns_limit_h_max              23
_reflns_limit_h_min              -23
_reflns_limit_k_max              22
_reflns_limit_k_min              0
_reflns_limit_l_max              25
_reflns_limit_l_min              0
_reflns_number_gt                9239
_reflns_number_total             13631
_reflns_threshold_expression     I>3.0\s(I)
_cod_data_source_file            b719796a.txt
_cod_data_source_block           sg21_2
_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 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_original_formula_sum        'C68.60 H61.20 N4 O8'
_cod_database_code               7103128