Aluminum and Zinc Complexes Based on an Amino-Bis(pyrazolyl) Ligand: Synthesis, Structures, and Use in MMA and Lactide Polymerization
Bing Lian; Christophe M. Thomas; Osvaldo L. Casagrande; Christian W. Lehmann; Thierry Roisnel; Jean-François Carpentier; Inorganic Chemistry 46 (2007) 328–340; doi:10.1021/ic061749z

data_4307207
_publ_section_title
;
Aluminum and Zinc Complexes Based on an Amino-Bis(pyrazolyl) Ligand:
Synthesis, Structures, and Use in MMA and Lactide Polymerization
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              328
_journal_page_last               340
_journal_paper_doi               10.1021/ic061749z
_journal_volume                  46
_journal_year                    2007
_chemical_formula_sum            'C17 H32 Al N5'
_chemical_formula_weight         333.46
_chemical_name_systematic
;
 ?
;
_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                112.304(5)
_cell_angle_beta                 93.821(5)
_cell_angle_gamma                106.374(5)
_cell_formula_units_Z            2
_cell_length_a                   8.826(5)
_cell_length_b                   10.920(5)
_cell_length_c                   11.763(5)
_cell_measurement_temperature    293(2)
_cell_volume                     986.9(8)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.849
_diffrn_measured_fraction_theta_max 0.849
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0303
_diffrn_reflns_av_sigmaI/netI    0.0279
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            23752
_diffrn_reflns_theta_full        35.47
_diffrn_reflns_theta_max         35.47
_diffrn_reflns_theta_min         2.45
_exptl_absorpt_coefficient_mu    0.110
_exptl_crystal_density_diffrn    1.122
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             364
_refine_diff_density_max         0.571
_refine_diff_density_min         -0.432
_refine_diff_density_rms         0.076
_refine_ls_extinction_coef       0.025(5)
_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   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         7650
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0538
_refine_ls_R_factor_gt           0.0462
_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^)+(0.0851P)^2^+0.3376P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1382
_refine_ls_wR_factor_ref         0.1478
_reflns_number_gt                6561
_reflns_number_total             7650
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic061749zsi20060914_055238_1.cif
_cod_data_source_block           Complex_2
_cod_database_code               4307207