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_7007242
_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 Ca N4 O2'
_chemical_formula_sum            'C42 H54 Ca N4 O2'
_chemical_formula_weight         686.98
_chemical_melting_point          430.0(10)
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_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                 101.7590(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.3852(3)
_cell_length_b                   11.1831(2)
_cell_length_c                   18.1765(4)
_cell_measurement_temperature    123(2)
_cell_volume                     3857.73(13)
_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 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.0572
_diffrn_reflns_av_sigmaI/netI    0.0635
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            12570
_diffrn_reflns_theta_full        27.90
_diffrn_reflns_theta_max         27.90
_diffrn_reflns_theta_min         2.11
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.202
_exptl_absorpt_correction_T_max  0.9607
_exptl_absorpt_correction_T_min  0.9418
_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    1.183
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             1480
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.654
_refine_diff_density_min         -0.696
_refine_diff_density_rms         0.178
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.408
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         4599
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.408
_refine_ls_R_factor_all          0.0995
_refine_ls_R_factor_gt           0.0574
_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^)+(0.0596P)^2^+4.2348P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1331
_refine_ls_wR_factor_ref         0.1882
_reflns_number_gt                3223
_reflns_number_total             4599
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b602210c.txt
_cod_data_source_block           COMPOUND_2
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '429-431' was changed to '430.0(10)'
- 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_cell_volume        3857.73(12)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               7007242