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_7219851
_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            'C19 H20 Cd N4 O4'
_chemical_formula_weight         480.79
_chemical_name_systematic
;
 ?
;
_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                 109.3510(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.8281(3)
_cell_length_b                   11.4808(4)
_cell_length_c                   15.8705(4)
_cell_measurement_reflns_used    12591
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.51
_cell_measurement_theta_min      2.68
_cell_volume                     1861.49(10)
_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 0.997
_diffrn_measured_fraction_theta_max 0.997
_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     0.71069
_diffrn_reflns_av_R_equivalents  0.0471
_diffrn_reflns_av_sigmaI/netI    0.0386
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            25826
_diffrn_reflns_theta_full        30.56
_diffrn_reflns_theta_max         30.56
_diffrn_reflns_theta_min         2.67
_exptl_absorpt_coefficient_mu    1.208
_exptl_absorpt_correction_T_max  0.746
_exptl_absorpt_correction_T_min  0.672
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Bruker SADABS (Bruker, 1999)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.716
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             968
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.818
_refine_diff_density_min         -0.397
_refine_diff_density_rms         0.102
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         5697
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0368
_refine_ls_R_factor_gt           0.0263
_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^)+(0.0248P)^2^+0.6812P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0566
_refine_ls_wR_factor_ref         0.0597
_reflns_number_gt                4814
_reflns_number_total             5697
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ce00010f2.cif
_cod_data_source_block           mo_ac2101_0m
_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               7219851