N,N?-Bis(2,6-diisopropylphenyl)formamidinate complexes of the heavy alkaline earths
Cole, Marcus L.; Junk, Peter C.; New Journal of Chemistry 29 (2005) 135–; doi:10.1039/b411494a

data_7052417
_publ_section_title
;
 N,N?-Bis(2,6-diisopropylphenyl)formamidinate complexes of the heavy
 alkaline earths
;
_journal_issue                   1
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              135
_journal_paper_doi               10.1039/b411494a
_journal_volume                  29
_journal_year                    2005
_chemical_formula_moiety         'C58 H86 N4 O2 Sr'
_chemical_formula_sum            'C58 H86 N4 O2 Sr'
_chemical_formula_weight         958.93
_chemical_melting_point          515
_chemical_name_common            '[Sr(DippForm)2(THF)2]'
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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                84.466(3)
_cell_angle_beta                 86.449(3)
_cell_angle_gamma                64.2010(10)
_cell_formula_units_Z            2
_cell_length_a                   12.0689(3)
_cell_length_b                   12.7964(5)
_cell_length_c                   19.6889(7)
_cell_measurement_temperature    123(2)
_cell_volume                     2724.21(16)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        X-Seed
_computing_molecular_graphics    'X-Seed / POV-Ray'
_computing_publication_material  'Microsoft Office 2000'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.976
_diffrn_measured_fraction_theta_max 0.976
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       'psi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1028
_diffrn_reflns_av_sigmaI/netI    0.1572
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            26694
_diffrn_reflns_theta_full        28.07
_diffrn_reflns_theta_max         28.07
_diffrn_reflns_theta_min         1.04
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.033
_exptl_absorpt_correction_T_max  0.9502
_exptl_absorpt_correction_T_min  0.6828
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'performed as part of the DENZO-SMN program'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.169
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rhombohedral plate'
_exptl_crystal_F_000             1032
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.858
_refine_diff_density_min         -1.150
_refine_diff_density_rms         0.116
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     602
_refine_ls_number_reflns         12922
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.1430
_refine_ls_R_factor_gt           0.0723
_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^)+(0.0701P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1359
_refine_ls_wR_factor_ref         0.1658
_reflns_number_gt                8009
_reflns_number_total             12922
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b411494a.txt
_cod_data_source_block           Compound2
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7052417