Crystalline di- or trianionic metal (Al, Sm) beta-diketiminates.
Coles, Martyn P.; Hitchcock, Peter B.; Khvostov, Alexei V.; Lappert, Michael F.; Protchenko, Andrey V.; Dalton transactions (Cambridge, England : 2003) 39 (2010) 6426–6433; doi:10.1039/c0dt00071j

data_7025950
_publ_section_title
;
 Crystalline di- or trianionic metal (Al, Sm) beta-diketiminates.
;
_journal_issue                   28
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6426
_journal_page_last               6433
_journal_paper_doi               10.1039/c0dt00071j
_journal_volume                  39
_journal_year                    2010
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C42 H58 K N4 Si4 Sm'
_chemical_formula_structural     'C42 H58 K N4 Si4 Sm'
_chemical_formula_sum            'C42 H58 K N4 Si4 Sm'
_chemical_formula_weight         920.74
_chemical_name_common            ((KSm(Me3SiCPhCHCPhNSiMe3)2)2)
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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_conform_dict_location     ftp://ftp.iucr.org/cifdics/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.1
_audit_creation_date             2000-11-16T09:59:05-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 94.925(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.0232(5)
_cell_length_b                   20.0158(5)
_cell_length_c                   17.9052(7)
_cell_measurement_reflns_used    19687
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      3.705
_cell_measurement_wavelength     0.71073
_cell_volume                     4650.1(3)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0627
_diffrn_reflns_av_unetI/netI     0.063
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            27295
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         3.72
_exptl_absorpt_coefficient_mu    1.487
_exptl_absorpt_correction_T_max  0.754
_exptl_absorpt_correction_T_min  0.717
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
[c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.315
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1900
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.709
_refine_diff_density_min         -0.867
_refine_diff_density_rms         0.086
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     477
_refine_ls_number_reflns         8199
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0639
_refine_ls_R_factor_gt           0.0394
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0354P)^2^+2.4694P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0802
_refine_ls_wR_factor_ref         0.089
_reflns_number_gt                6183
_reflns_number_total             8199
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0dt00071j.txt
_cod_data_source_block           (4)-nov1500
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7025950