Influence of ligand backbone flexibility in group 4 metal complexes of tetradentate mixed tertiary amine/alkoxide ligands
Day, Joanna K.; Baghurst, Rebecca E.; Strevens, Robert R.; Light, Mark E.; Hursthouse, Michael B.; Stengel, Bruno F.; Fallis, Ian A.; Aldridge, Simon; New Journal of Chemistry 31 (2007) 135–; doi:10.1039/b608680b

data_7052057
_publ_section_title
;
 Influence of ligand backbone flexibility in group 4 metal complexes of
 tetradentate mixed tertiary amine/alkoxide ligands
;
_journal_issue                   1
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              135
_journal_paper_doi               10.1039/b608680b
_journal_volume                  31
_journal_year                    2007
_chemical_formula_sum            'C32 H68 N4 O4 Zr'
_chemical_formula_weight         664.12
_space_group_IT_number           2
_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
_cell_angle_alpha                76.68(3)
_cell_angle_beta                 72.59(3)
_cell_angle_gamma                68.58(3)
_cell_formula_units_Z            2
_cell_length_a                   10.762(2)
_cell_length_b                   12.115(2)
_cell_length_c                   15.963(3)
_cell_measurement_temperature    150(2)
_cell_volume                     1831.5(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_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  0.0562
_diffrn_reflns_av_sigmaI/netI    0.0436
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            36431
_diffrn_reflns_theta_full        27.45
_diffrn_reflns_theta_max         27.45
_diffrn_reflns_theta_min         2.92
_exptl_absorpt_coefficient_mu    0.337
_exptl_absorpt_correction_T_max  0.9356
_exptl_absorpt_correction_T_min  0.8956
_exptl_absorpt_correction_type   Sortav
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.204
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.117
_refine_diff_density_min         -0.520
_refine_diff_density_rms         0.085
_refine_ls_extinction_coef       0.0057(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     407
_refine_ls_number_reflns         8322
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0458
_refine_ls_R_factor_gt           0.0373
_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^)+(0.0335P)^2^+1.5704P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0851
_refine_ls_wR_factor_ref         0.0886
_reflns_number_gt                7352
_reflns_number_total             8322
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b608680b.txt
_cod_data_source_block           c:\bono\solv\s92
_cod_original_cell_volume        1831.5(6)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7052057