Effect of π–π stacking interactions on the emission properties of cadmium metal–organic frameworks based on 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene
Calahorro, Antonio J.; San Sebastián, Eider; Salinas-Castillo, Alfonso; Seco, Jose M.; Mendicute-Fierro, Claudio; Fernández, Belén; Rodríguez-Diéguez, Antonio; CrystEngComm 17 (2015) 3659–; doi:10.1039/C5CE00010F

data_7219855
_publ_section_title
;
 Effect of \p--\p stacking interactions on the emission properties of
 cadmium metal--organic frameworks based on
 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene
;
_journal_issue                   19
_journal_name_full               CrystEngComm
_journal_page_first              3659
_journal_paper_doi               10.1039/C5CE00010F
_journal_volume                  17
_journal_year                    2015
_chemical_formula_sum            'C18 H20 N4 O4'
_chemical_formula_weight         356.38
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2014-11-02 deposited with the CCDC.
2015-03-10 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 97.778(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.8452(4)
_cell_length_b                   10.3656(10)
_cell_length_c                   17.3307(17)
_cell_measurement_reflns_used    1269
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.45
_cell_measurement_theta_min      2.29
_cell_volume                     862.40(14)
_computing_cell_refinement       'Bruker Apex II'
_computing_data_collection       'Bruker ApexII'
_computing_data_reduction        'Bruker Apex II'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXL-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       'Phi and 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  0.0819
_diffrn_reflns_av_sigmaI/netI    0.0791
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            8178
_diffrn_reflns_theta_full        28.70
_diffrn_reflns_theta_max         28.70
_diffrn_reflns_theta_min         2.30
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  0.745
_exptl_absorpt_correction_T_min  0.644
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS (Bruker, 1999)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.372
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             376
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.366
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         2227
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.1137
_refine_ls_R_factor_gt           0.0546
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0596P)^2^+0.0324P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1075
_refine_ls_wR_factor_ref         0.1270
_reflns_number_gt                1374
_reflns_number_total             2227
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ce00010f2.cif
_cod_data_source_block           mo_ac211
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3105 2015-03-04 15:46:00Z robertas 

 Adding full bibliography for 7219850--7219856.cif.
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               7219855