New dibenzofuran-bridged bis(amidoamine) and bis(ethylenediamine) ligands and their dinuclear zinc and aluminium complexes
Hlavinka, Mark L.; Hagadorn, John R.; Chemical Communications (Cambridge, United Kingdom)  (2003) 2686–2687; doi:10.1039/b309732c

data_7104880
_publ_section_title
;
 New dibenzofuran-bridged bis(amidoamine) and bis(ethylenediamine) ligands
 and their dinuclear zinc and aluminium complexes
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   21
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2686
_journal_page_last               2687
_journal_paper_doi               10.1039/b309732c
_journal_year                    2003
_chemical_formula_sum            'C21 H30 Cl6 N4 O Zn2'
_chemical_formula_weight         697.93
_chemical_name_common            LH2Zn2Cl4aCH2Cl2
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_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            4
_cell_length_a                   13.9254(6)
_cell_length_b                   18.4546(7)
_cell_length_c                   11.2231(5)
_cell_measurement_reflns_used    6149
_cell_measurement_temperature    158(2)
_cell_measurement_theta_max      31.254
_cell_measurement_theta_min      2.207
_cell_volume                     2884.2(2)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'SHELXTL, Bruker'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      158(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0582
_diffrn_reflns_av_sigmaI/netI    0.0622
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            17210
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.21
_exptl_absorpt_coefficient_mu    2.241
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.545
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
absorption correction applied using SADABS
(Blessing, R. H. Acta Crystallogr., Sect. A 1995, 51, 33-38)'
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.607
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1416
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.440
_refine_diff_density_min         -0.485
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.078(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     319
_refine_ls_number_reflns         4544
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0380
_refine_ls_R_factor_gt           0.0337
_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^)+(0.0260P)^2^+1.3926P] where P==(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0814
_refine_ls_wR_factor_ref         0.0838
_reflns_number_gt                4191
_reflns_number_total             4544
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b309732c.txt
_cod_data_source_block           compound_3
_cod_original_sg_symbol_H-M      Pca2(1)
_cod_database_code               7104880