Low-Melting, Mononuclear Tetrahydrofuran Complexes of M(2,2,6,6-tetramethylheptane-3,5-dionate)2 (M = Ba, Sr) and Related Analogues
Witold Paw; Thomas H. Baum; Kin-Chung Lam; Arnold L. Rheingold; Inorganic Chemistry 39 (2000) 2011–2014; doi:10.1021/ic990641z

data_4320903
_publ_section_title
;
 Low-Melting, Mononuclear Tetrahydrofuran Complexes of
 M(2,2,6,6-tetramethylheptane-3,5-dionate)2 (M = Ba, Sr) and Related
 Analogues
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2011
_journal_page_last               2014
_journal_paper_doi               10.1021/ic990641z
_journal_volume                  39
_journal_year                    2000
_chemical_formula_sum            'C38 H70 O8 Sr'
_chemical_formula_weight         742.56
_chemical_name_systematic
;
 [Sr(thd)2(THF)4]
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-I 2ya'
_symmetry_space_group_name_H-M   'I 1 2/a 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                 109.2415(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.9087(3)
_cell_length_b                   9.6863(2)
_cell_length_c                   23.0043(5)
_cell_measurement_reflns_used    4526
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.0
_cell_volume                     4188.37(14)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.921
_diffrn_measured_fraction_theta_max 0.921
_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  0.0758
_diffrn_reflns_av_sigmaI/netI    0.0684
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            7307
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    1.331
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.178
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.144
_refine_diff_density_min         -0.745
_refine_diff_density_rms         0.103
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.626
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     213
_refine_ls_number_reflns         3399
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.626
_refine_ls_R_factor_all          0.0930
_refine_ls_R_factor_gt           0.0685
_refine_ls_shift/su_max          0.045
_refine_ls_shift/su_mean         0.004
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0700P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1668
_refine_ls_wR_factor_ref         0.1849
_reflns_number_gt                2712
_reflns_number_total             3399
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic990641z_2.cif
_cod_data_source_block           atm21b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        4188.4(2)
_cod_database_code               4320903