Synthesis and Structure of Strontium and Barium Guanidinates and Mixed-Ligand Guanidinate Pentamethylcyclopentadienyl Complexes
Cameron, Thomas M.; Xu, Chongying; Dipasquale, Antonio G.; Rheingold, Arnold L.; Organometallics 27 (2008) 1596–; doi:10.1021/om701118j

data_4070913
_publ_section_title
;
 Synthesis and Structure of Strontium and Barium Guanidinates and
 Mixed-Ligand Guanidinate Pentamethylcyclopentadienyl Complexes
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              1596
_journal_paper_doi               10.1021/om701118j
_journal_volume                  27
_journal_year                    2008
_chemical_formula_sum            'C46 H86 N6 Sr2'
_chemical_formula_weight         898.45
_chemical_name_common            6
_space_group.centring_type       P
_space_group_IT_number           14
_space_group.IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 102.513(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.0150(15)
_cell_length_b                   12.6800(16)
_cell_length_c                   16.614(2)
_cell_measurement_reflns_used    8186
_cell_measurement_temperature    208(2)
_cell_measurement_theta_max      28.15
_cell_measurement_theta_min      2.37
_cell_volume                     2471.0(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ORTEP-32
_computing_publication_material  WinGX
_computing_structure_refinement  SHELXL-97
_computing_structure_solution    SIR-2004
_diffrn_ambient_temperature      208(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.952
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0389
_diffrn_reflns_av_sigmaI/netI    0.0451
_diffrn_refln_scan_rate          10
_diffrn_refln_scan_width         0.3
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            16879
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         2.04
_exptl_absorpt_coefficient_mu    2.193
_exptl_absorpt_correction_T_max  0.7344
_exptl_absorpt_correction_T_min  0.6681
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.208
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.457
_refine_diff_density_min         -0.341
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         5832
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_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0490
_refine_ls_R_factor_gt           0.0362
_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^)+(0.0395P)^2^+0.7182P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0806
_refine_ls_wR_factor_ref         0.0858
_reflns_number_gt                4727
_reflns_number_total             5832
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om701118j-file003.cif
_cod_data_source_block           6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_space_group.centring_type' value 'primitive' was replaced with the
value 'P' as specified in the replacement file
'/home/antanas/src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5642 2017-10-24 12:04:52Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4070913