A flexible 1,8-naphthyridyl derivative and its Zn(II) complexes: synthesis, structures, spectroscopic properties and recognition of Cd(II)
Zhang, Hui-Miao; Fu, Wen-Fu; Gan, Xin; Xu, Yan-Qing; Wang, Jun; Xu, Quan-Qing; Chi, Shao-Ming; Dalton Transactions  (2008) 6817–6824; doi:10.1039/b809701a

data_7004643
_publ_section_title
;
 A flexible 1,8-naphthyridyl derivative and its Zn(II) complexes:
 synthesis, structures, spectroscopic properties and recognition of
 Cd(II)
;
_journal_issue                   47
_journal_name_full               'Dalton Transactions'
_journal_page_first              6817
_journal_page_last               6824
_journal_paper_doi               10.1039/b809701a
_journal_year                    2008
_chemical_formula_moiety         'C19 H20 N6, 2(Cl O4)'
_chemical_formula_sum            'C19 H20 Cl2 N6 O8'
_chemical_formula_weight         531.31
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   8.1910(5)
_cell_length_b                   19.3250(12)
_cell_length_c                   27.8850(19)
_cell_measurement_reflns_used    7263
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      28.0
_cell_measurement_theta_min      2.1
_cell_volume                     4413.9(5)
_computing_cell_refinement       CrystalClear
_computing_data_collection       CrystalClear
_computing_data_reduction        crystalclear
_computing_publication_material  'CrystalStructure 3.7.0'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0611
_diffrn_reflns_av_sigmaI/netI    0.0292
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            31220
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.11
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.356
_exptl_absorpt_correction_T_max  0.951
_exptl_absorpt_correction_T_min  0.934
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   crystalclear
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.599
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2192
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.351
_refine_diff_density_min         -0.410
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.162
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     408
_refine_ls_number_reflns         3882
_refine_ls_number_restraints     124
_refine_ls_restrained_S_all      1.180
_refine_ls_R_factor_all          0.0651
_refine_ls_R_factor_gt           0.0597
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0498P)^2^+5.3196P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1306
_refine_ls_wR_factor_ref         0.1339
_reflns_number_gt                3598
_reflns_number_total             3883
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b809701a.txt
_cod_data_source_block           L
_cod_original_cell_volume        4414.0(5)
_cod_database_code               7004643