Synthesis and structural characterisation of heavy alkaline earth N,N'-bis(aryl)formamidinate complexes.
Cole, Marcus L.; Deacon, Glen B.; Forsyth, Craig M.; Konstas, Kristina; Junk, Peter C.; Dalton transactions (Cambridge, England : 2003)  (2006) 3360–3367; doi:10.1039/b602210c

data_7007243
_publ_section_title
;
 Synthesis and structural characterisation of heavy alkaline earth
 N,N'-bis(aryl)formamidinate complexes.
;
_journal_issue                   27
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3360
_journal_page_last               3367
_journal_paper_doi               10.1039/b602210c
_journal_year                    2006
_chemical_compound_source        THF
_chemical_formula_moiety         'C42 H54 N4 O3 Sr'
_chemical_formula_sum            'C42 H54 N4 O3 Sr'
_chemical_formula_weight         750.51
_chemical_melting_point          430.5(15)
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      9
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 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                 100.313(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.4128(8)
_cell_length_b                   9.8514(4)
_cell_length_c                   18.7930(8)
_cell_measurement_temperature    123(2)
_cell_volume                     3900.3(3)
_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 0.979
_diffrn_measured_fraction_theta_max 0.979
_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  0.1114
_diffrn_reflns_av_sigmaI/netI    0.1869
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            15560
_diffrn_reflns_theta_full        28.10
_diffrn_reflns_theta_max         28.10
_diffrn_reflns_theta_min         3.87
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    1.425
_exptl_absorpt_correction_T_max  0.9322
_exptl_absorpt_correction_T_min  0.7637
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'performed as part of the DENZO-SMN package'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.278
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.569
_refine_diff_density_min         -0.606
_refine_diff_density_rms         0.109
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.004(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.872
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     455
_refine_ls_number_reflns         7223
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.872
_refine_ls_R_factor_all          0.1438
_refine_ls_R_factor_gt           0.0605
_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^)+(0.0819P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1159
_refine_ls_wR_factor_ref         0.1494
_reflns_number_gt                4314
_reflns_number_total             7223
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b602210c.txt
_cod_data_source_block           COMPOUND_4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '429-432' was changed to '430.5(15)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
;
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               7007243