Syntheses of bis(pyrrolylaldiminato)aluminum complexes for the polymerisation of lactide.
Pracha, Supathana; Praban, Siriwan; Niewpung, Amornrat; Kotpisan, Gulthawach; Kongsaeree, Palangpon; Saithong, Saowanit; Khamnaen, Tossapol; Phiriyawirut, Phairat; Charoenchaidet, Sumate; Phomphrai, Khamphee; Dalton transactions (Cambridge, England : 2003) 42 (2013) 15191–15198; doi:10.1039/c3dt51377g

data_7023464
_publ_section_title
;
 Syntheses of bis(pyrrolylaldiminato)aluminum complexes for the
 polymerisation of lactide.
;
_journal_issue                   42
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              15191
_journal_page_last               15198
_journal_paper_doi               10.1039/c3dt51377g
_journal_volume                  42
_journal_year                    2013
_chemical_formula_moiety         'C35 H45 Al N4'
_chemical_formula_sum            'C35 H45 Al N4'
_chemical_formula_weight         548.73
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 99.646(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.2580(11)
_cell_length_b                   9.8370(8)
_cell_length_c                   16.2040(12)
_cell_measurement_reflns_used    11753
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      0.998
_cell_volume                     3183.4(4)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Bruker SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHEXTL(Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 14
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  KappaCCD2000
_diffrn_measurement_method       '\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  0.0790
_diffrn_reflns_av_unetI/netI     0.0605
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            8318
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.145
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rod
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.385
_refine_diff_density_min         -0.320
_refine_diff_density_rms         0.058
_refine_ls_extinction_coef       0.014(2)
_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   1.077
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     188
_refine_ls_number_reflns         3655
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.077
_refine_ls_R_factor_all          0.0702
_refine_ls_R_factor_gt           0.0525
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0568P)^2^+2.4543P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1291
_refine_ls_wR_factor_ref         0.1414
_reflns_number_gt                2870
_reflns_number_total             3655
_reflns_threshold_expression     >2s(I)
_cod_data_source_file            c3dt51377g.txt
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7023464