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_4070916
_publ_section_title
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 Synthesis and Structure of Strontium and Barium Guanidinates and
 Mixed-Ligand Guanidinate Pentamethylcyclopentadienyl Complexes
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_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            'C30 H74 N6 O Si4 Sr'
_chemical_formula_weight         734.93
_chemical_name_common            10
_space_group.centring_type       C
_space_group_IT_number           15
_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                 110.4550(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   29.443(2)
_cell_length_b                   9.6770(7)
_cell_length_c                   16.5960(12)
_cell_measurement_reflns_used    5985
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.02
_cell_measurement_theta_min      2.45
_cell_volume                     4430.4(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      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.936
_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  0.0240
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_refln_scan_rate          5
_diffrn_refln_scan_width         0.3
_diffrn_reflns_limit_h_max       38
_diffrn_reflns_limit_h_min       -38
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            18576
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.12
_diffrn_reflns_theta_min         2.23
_exptl_absorpt_coefficient_mu    1.353
_exptl_absorpt_correction_T_max  0.7737
_exptl_absorpt_correction_T_min  0.7737
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.102
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1592
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.426
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         5075
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0296
_refine_ls_R_factor_gt           0.0261
_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^)+(0.0375P)^2^+1.8784P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0642
_refine_ls_wR_factor_ref         0.0657
_reflns_number_gt                4691
_reflns_number_total             5075
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om701118j-file003.cif
_cod_data_source_block           10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_space_group.centring_type' value 'C centered' was replaced with the
value 'C' 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      C2/c
_cod_database_code               4070916