A series of alkaline earth metal coordination polymers constructed from two newly designed imidazole-based dicarboxylate ligands containing pyridinylmethyl group
Cai, Songliang; He, Zi-Hao; Wu, Wan-Hua; Liu, Fang-Xiu; Huang, Xiao-Ling; Zheng, Shengrun; Fan, Jun; Zhang, Wei-Guang; CrystEngComm  (2017) –; doi:10.1039/C7CE00568G

data_7228178
_publ_section_title
;
 A series of alkaline earth metal coordination polymers constructed from
 two newly designed imidazole-based dicarboxylate ligands containing
 pyridinylmethyl group
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C7CE00568G
_journal_year                    2017
_chemical_formula_moiety         'C28 H30 N8 O10 Sr, H2 O'
_chemical_formula_sum            'C28 H32 N8 O11 Sr'
_chemical_formula_weight         744.23
_space_group_crystal_system      tetragonal
_space_group_IT_number           96
_space_group_name_Hall           'P 4nw 2abw'
_space_group_name_H-M_alt        'P 43 21 2'
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-03-23 deposited with the CCDC.
2017-05-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.200(2)
_cell_length_b                   14.200(2)
_cell_length_c                   17.207(3)
_cell_measurement_reflns_used    2254
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      18.82
_cell_measurement_theta_min      2.35
_cell_volume                     3469.6(9)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0919
_diffrn_reflns_av_unetI/netI     0.0823
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18907
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.993
_diffrn_reflns_theta_min         1.859
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.621
_exptl_absorpt_correction_T_max  0.7376
_exptl_absorpt_correction_T_min  0.6597
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS(sheldrick, 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1528
_exptl_crystal_size_max          0.280
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.431
_refine_diff_density_min         -0.306
_refine_diff_density_rms         0.076
_refine_ls_abs_structure_details
;
 Flack x determined using 827 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.016(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.061
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     221
_refine_ls_number_reflns         3421
_refine_ls_number_restraints     162
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0834
_refine_ls_R_factor_gt           0.0536
_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^)+(0.0752P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1314
_refine_ls_wR_factor_ref         0.1457
_reflns_Friedel_coverage         0.703
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                2529
_reflns_number_total             3421
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce00568g2.cif
_cod_data_source_block           7
_cod_original_cell_volume        3469.4(12)
_cod_database_code               7228178
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.660
_shelx_estimated_absorpt_t_max   0.738
_shelx_res_checksum              3414