Multisubstituted <i>C</i><sub>2</sub>-symmetric <i>ansa</i>-metallocenes bearing nitrogen heterocycles: influence of substituents on catalytic properties in propylene polymerization at higher temperatures.
Kulyabin, Pavel S.; Izmer, Vyatcheslav V.; Goryunov, Georgy P.; Sharikov, Mikhail I.; Kononovich, Dmitry S.; Uborsky, Dmitry V.; Canich, Jo Ann M.; Voskoboynikov, Alexander Z.; Dalton transactions (Cambridge, England : 2003) 50 (2021) 6170–6180; doi:10.1039/d1dt00645b

data_7707149
_publ_section_title
;
 Multisubstituted <i>C</i><sub>2</sub>-symmetric <i>ansa</i>-metallocenes
 bearing nitrogen heterocycles: influence of substituents on catalytic
 properties in propylene polymerization at higher temperatures.
;
_journal_issue                   18
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6170
_journal_page_last               6180
_journal_paper_doi               10.1039/d1dt00645b
_journal_volume                  50
_journal_year                    2021
_chemical_formula_moiety         'C48 H40 Cl2 N2 Si Zr, 2(C7 H8)'
_chemical_formula_sum            'C62 H56 Cl2 N2 Si Zr'
_chemical_formula_weight         1019.30
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2021-02-25 deposited with the CCDC.	2021-04-19 downloaded from the CCDC.
;
_cell_angle_alpha                88.4788(13)
_cell_angle_beta                 75.8186(13)
_cell_angle_gamma                63.3302(12)
_cell_formula_units_Z            2
_cell_length_a                   13.6391(10)
_cell_length_b                   13.7468(10)
_cell_length_c                   15.4585(12)
_cell_measurement_reflns_used    999
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      29
_cell_measurement_theta_min      3
_cell_volume                     2499.4(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX II'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Bruker APEX DUA CCD area detector'
_diffrn_measurement_method       '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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0358
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            13139
_diffrn_reflns_theta_full        29.00
_diffrn_reflns_theta_max         29.00
_diffrn_reflns_theta_min         1.67
_exptl_absorpt_coefficient_mu    0.394
_exptl_absorpt_correction_T_max  0.911
_exptl_absorpt_correction_T_min  0.849
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.354
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1060
_exptl_crystal_size_max          0.43
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.760
_refine_diff_density_min         -0.569
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     622
_refine_ls_number_reflns         13150
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0489
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0379P)^2^+1.1957P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0812
_refine_ls_wR_factor_ref         0.0927
_reflns_number_gt                11126
_reflns_number_total             13150
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            d1dt00645b2.cif
_cod_data_source_block           t
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 7707148--7707153.cif.
;
_cod_database_code               7707149