A series of helical coordination polymers based on two racemic bis(pyridylmethylene) propane-1,2-diamine ligands: Relationship of conformations, structures and properties
Zhu, Li-Na; Deng, Zhaopeng; Huo, Li-Hua; Gao, Shan; CrystEngComm  (2019) –; doi:10.1039/C9CE01210A

data_7234799
_publ_section_title
;
 A series of helical coordination polymers based on two racemic
 bis(pyridylmethylene) propane-1,2-diamine ligands: Relationship of
 conformations, structures and properties
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/C9CE01210A
_journal_year                    2019
_chemical_formula_moiety         'C15 H20 Cl4 N4 Zn2'
_chemical_formula_sum            'C15 H20 Cl4 N4 Zn2'
_chemical_formula_weight         528.89
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2019-07-01 deposited with the CCDC.    2019-10-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 89.934(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.2155(5)
_cell_length_b                   9.0903(6)
_cell_length_c                   28.4307(15)
_cell_measurement_reflns_used    1839
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      26.2940
_cell_measurement_theta_min      3.6580
_cell_volume                     2123.2(2)
_computing_cell_refinement
;
CrysAlis Pro (Agilent, 2013)
;
_computing_data_collection
;
CrysAlis Pro (Agilent, 2013)
;
_computing_data_reduction
;
CrysAlis Pro (Agilent, 2013)
;
_computing_molecular_graphics    '(K. Brandenburg, Diamond 3.1, 2009)'
_computing_publication_material  '(K. Brandenburg, Diamond 3.1, 2009)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 16.1954
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0351
_diffrn_reflns_av_unetI/netI     0.0720
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7738
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.562
_diffrn_reflns_theta_min         3.636
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    2.768
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.34489
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlis Pro (Agilent, 2013)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.655
_exptl_crystal_description       block
_exptl_crystal_F_000             1064
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.130
_refine_diff_density_max         1.675
_refine_diff_density_min         -0.505
_refine_diff_density_rms         0.112
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         4848
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.1029
_refine_ls_R_factor_gt           0.0613
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0739P)^2^+0.6615P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1424
_refine_ls_wR_factor_ref         0.1620
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3145
_reflns_number_total             4848
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ce01210a2.cif
_cod_data_source_block           d8242
_cod_original_cell_volume        2123.3(2)
_cod_database_code               7234799
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.636
_shelx_estimated_absorpt_t_max   0.715
_shelx_res_checksum              29739