Long-range chain orientation in 1-D co-ordination polymers as a function of anions and intermolecular aromatic interactions
Blake, Alexander J.; Baum, Gerhard; Champness, Neil R.; Chung, Simon S. M.; Cooke, Paul A.; Fenske, Dieter; Khlobystov, Andrei N.; Lemenovskii, Dmitrii A.; Li, Wan-Sheung; Schröder, Martin; Journal of the Chemical Society, Dalton Transactions  (2000) 4285–; doi:10.1039/b006202m

data_7702444
_publ_section_title
;
 Long-range chain orientation in 1-D co-ordination polymers as a function
 of anions and intermolecular aromatic interactions
;
_journal_issue                   23
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              4285
_journal_paper_doi               10.1039/b006202m
_journal_year                    2000
_chemical_formula_moiety         C14H8N2
_chemical_formula_sum            'C14 H8 N2'
_chemical_formula_weight         204.22
_chemical_melting_point          ?
_chemical_name_common            2.7-diazapyrene
_chemical_name_systematic
; 
 2,7-Diazapyrene 
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   'difference Fourier methods'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.96(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   3.7891(12)
_cell_length_b                   8.0997(16)
_cell_length_c                   15.421(4)
_cell_measurement_reflns_used    42
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      16.7
_cell_measurement_theta_min      13.65
_cell_volume                     472.1(2)
_computing_cell_refinement       STADI-4
_computing_data_collection       'STADI-4 (Stoe & Cie, 1996a)'
_computing_data_reduction        'X-RED (Stoe & Cie, 1996b)'
_computing_molecular_graphics    'SHELXTL/PC version 5.03 (Sheldrick, 1994)'
_computing_publication_material  'SHELXL-96; PLATON (Spek, 1999)'
_computing_structure_refinement  'SHELXL-96 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Stoe Stadi-4 four-circle'
_diffrn_measurement_method       omega-theta
_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  0.0173
_diffrn_reflns_av_sigmaI/netI    0.0134
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            2590
_diffrn_reflns_theta_full        24.98
_diffrn_reflns_theta_max         24.98
_diffrn_reflns_theta_min         2.65
_diffrn_standards_decay_%        '+/-5% variation'
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow/orange
_exptl_crystal_density_diffrn    1.437
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       column
_exptl_crystal_F_000             212
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.34
_refine_diff_density_max         0.19
_refine_diff_density_min         -0.13
_refine_diff_density_rms         0.03
_refine_ls_extinction_coef       0.023(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.100
_refine_ls_hydrogen_treatment    'riding model'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     78
_refine_ls_number_reflns         839
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.100
_refine_ls_R_factor_all          0.0484
_refine_ls_R_factor_gt           0.0366
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.039P)^2^+0.188P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0900
_refine_ls_wR_factor_ref         0.1002
_reflns_number_gt                673
_reflns_number_total             839
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b006202m.txt
_cod_data_source_block           PY27AZ
_cod_depositor_comments
;
The following automatic conversions were performed:

data name '_atom_site_symetry_multiplicity' was replaced with
'_atom_site_symmetry_multiplicity' as specified in the replacement
file
'/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/lists/replacement-tags.lst'.

Automatic conversion script
Id: cif_correct_tags 6909 2019-04-08 15:41:33Z antanas 

The following automatic conversions were performed:

data item '_chemical_melting_point' value 'unknown' was changed to
'?' -- the value is undefined or not given.

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

data item '_atom_sites_solution_hydrogens' value 'placed
geometrically' was changed to 'geom'.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7702444