Salen complexes of zirconium and hafnium: synthesis, structural characterization and polymerization studies
Mandal, Mrinmay; Ramkumar, Venkatachalam; Chakraborty, Debashis; Polymer Chemistry 10 (2019) 3444–; doi:10.1039/C8PY01750F

data_1550803
_publ_section_title
;
 Salen complexes of zirconium and hafnium: synthesis, structural
 characterization and polymerization studies
;
_journal_issue                   25
_journal_name_full               'Polymer Chemistry'
_journal_page_first              3444
_journal_paper_doi               10.1039/C8PY01750F
_journal_volume                  10
_journal_year                    2019
_chemical_formula_sum            'C28 H32 Br4 Hf N2 O4'
_chemical_formula_weight         958.69
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-01-09 deposited with the CCDC.    2019-03-25 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 111.2790(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9424(4)
_cell_length_b                   25.8050(10)
_cell_length_c                   11.3456(3)
_cell_measurement_reflns_used    5187
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      31.50
_cell_measurement_theta_min      2.42
_cell_volume                     3258.04(19)
_computing_cell_refinement       APEXII,Bruker,2004
_computing_data_collection       APEXII,Bruker,2004
_computing_data_reduction        SAINT,Bruker,2004
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.881
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0391
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_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       38
_diffrn_reflns_limit_k_min       -38
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            27332
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         32.22
_diffrn_reflns_theta_min         1.58
_exptl_absorpt_coefficient_mu    8.141
_exptl_absorpt_correction_T_max  0.4965
_exptl_absorpt_correction_T_min  0.1628
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker,2004)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.954
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Hexagonal
_exptl_crystal_F_000             1832
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.736
_refine_diff_density_min         -1.257
_refine_diff_density_rms         0.151
_refine_ls_extinction_method     none
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_refine_ls_matrix_type           full
_refine_ls_number_parameters     358
_refine_ls_number_reflns         10150
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0720
_refine_ls_R_factor_gt           0.0379
_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^)+(0.0309P)^2^+0.4752P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0663
_refine_ls_wR_factor_ref         0.0747
_reflns_number_gt                7314
_reflns_number_total             10150
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8py01750f2.cif
_cod_data_source_block           Hf1
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 1550799--1550804.cif.
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1550803