Zirconium complexes incorporated with asymmetrical tridentate pincer type mono- and di-anionic pyrrolyl ligands: mechanism and reactivity as catalytic precursors.
Hsu, Jia-Wei; Lin, Yu-Chun; Hsiao, Ching-Sheng; Datta, Amitabha; Lin, Chia-Her; Huang, Jui-Hsien; Tsai, Jing-Cherng; Hsu, Wei-Che; Dalton transactions (Cambridge, England : 2003) 41 (2012) 7700–7707; doi:10.1039/c2dt30417a

data_7019461
_publ_section_title
;
 Zirconium complexes incorporated with asymmetrical tridentate pincer type
 mono- and di-anionic pyrrolyl ligands: mechanism and reactivity as
 catalytic precursors.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7700
_journal_page_last               7707
_journal_paper_doi               10.1039/c2dt30417a
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C24 H43 Cl N6 Zr'
_chemical_formula_sum            'C24 H43 Cl N6 Zr'
_chemical_formula_weight         542.31
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_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                 110.323(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.384(3)
_cell_length_b                   9.8710(18)
_cell_length_c                   18.687(3)
_cell_measurement_reflns_used    4537
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.760
_cell_measurement_theta_min      1.48
_cell_volume                     2661.1(8)
_computing_cell_refinement       'SAINT V7.68A (Bruker AXS, 2009)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V7.68A (Bruker AXS, 2009)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0577
_diffrn_reflns_av_sigmaI/netI    0.0399
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            45256
_diffrn_reflns_theta_full        28.85
_diffrn_reflns_theta_max         28.85
_diffrn_reflns_theta_min         1.48
_exptl_absorpt_coefficient_mu    0.536
_exptl_absorpt_correction_T_max  0.7738
_exptl_absorpt_correction_T_min  0.5327
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs Version 2008/1'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.354
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1144
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.572
_refine_diff_density_min         -0.566
_refine_diff_density_rms         0.069
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         6956
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0475
_refine_ls_R_factor_gt           0.0321
_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^)+(0.0344P)^2^+1.0411P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0740
_refine_ls_wR_factor_ref         0.0808
_reflns_number_gt                5602
_reflns_number_total             6956
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt30417a.txt
_cod_data_source_block           ray3071_0m
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7019461