Five complexes based on a new racemic tetraoxaspiro ligand: correlation of potential coordination preferences with the structure, magnetic properties and luminescence properties.
Hu, Min-Na; Zhang, Wen-Qian; Liu, Hua; He, Peng-Xiu; Liu, Ping; Wang, Yao-Yu; Li, Jian-Li; Dalton transactions (Cambridge, England : 2003) 48 (2019) 3862–3873; doi:10.1039/c8dt04051f

data_7701798
_publ_section_title
;
 Five complexes based on a new racemic tetraoxaspiro ligand: correlation
 of potential coordination preferences with the structure, magnetic
 properties and luminescence properties.
;
_journal_issue                   12
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3862
_journal_page_last               3873
_journal_paper_doi               10.1039/c8dt04051f
_journal_volume                  48
_journal_year                    2019
_chemical_formula_sum            'C17 H18 N2 O4'
_chemical_formula_weight         314.33
_space_group_crystal_system      orthorhombic
_space_group_IT_number           41
_space_group_name_Hall           'A 2 -2ab'
_space_group_name_H-M_alt        'A e a 2'
_atom_sites_solution_hydrogens   geom
_audit_block_doi                 10.5517/ccdc.csd.cc205msm
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-12-25 deposited with the CCDC.
2019-01-09 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   24.479(7)
_cell_length_b                   10.978(3)
_cell_length_c                   5.6901(16)
_cell_measurement_reflns_used    1230
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      23.28
_cell_measurement_theta_min      3.33
_cell_volume                     1529.1(7)
_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-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.988
_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  0.0301
_diffrn_reflns_av_unetI/netI     0.0425
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            4516
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.952
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.227
_diffrn_reflns_theta_min         1.664
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.365
_exptl_crystal_description       block
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.170
_refine_diff_density_max         0.240
_refine_diff_density_min         -0.230
_refine_diff_density_rms         0.066
_refine_ls_abs_structure_details
;
 Flack x determined using 499 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   1.3(8)
_refine_ls_extinction_coef       0.011(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     106
_refine_ls_number_reflns         1810
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0593
_refine_ls_R_factor_gt           0.0421
_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^)+(0.0458P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0865
_refine_ls_wR_factor_ref         0.0938
_reflns_Friedel_coverage         0.750
_reflns_Friedel_fraction_full    0.979
_reflns_Friedel_fraction_max     0.908
_reflns_number_gt                1411
_reflns_number_total             1810
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt04051f2.cif
_cod_data_source_block           1_CCDC3
_cod_original_sg_symbol_Hall     'A 2 -2ac'
_cod_original_sg_symbol_H-M      'A b a 2'
_cod_database_code               7701798
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.981
_shelx_estimated_absorpt_t_max   0.983
_shelx_res_checksum              77790