Bis{[diphenyl(piperidinomethyl)silyl]methyl}cadmium and -magnesium
Strohmann, Carsten; Schildbach, Daniel; Acta Crystallographica Section C 58 (2002) m447–m449; doi:10.1107/S0108270102011307

data_2012878
_publ_section_title
;
 Bis{[diphenyl(piperidinomethyl)silyl]methyl}cadmium and -magnesium
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              m447
_journal_page_last               m449
_journal_paper_doi               10.1107/S0108270102011307
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          '[Mg (C19 H24 N Si)2]'
_chemical_formula_moiety         'C38 H48 Mg N2 Si2'
_chemical_formula_sum            'C38 H48 Mg N2 Si2'
_chemical_formula_weight         613.27
_chemical_name_systematic
;
Bis{[diphenyl(piperidinomethyl)silyl]methyl}magnesium
;
_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'
_cell_angle_alpha                90
_cell_angle_beta                 93.38(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   27.215(5)
_cell_length_b                   6.4100(10)
_cell_length_c                   19.576(4)
_cell_measurement_reflns_used    6000
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.0
_cell_measurement_theta_min      2.49
_cell_volume                     3409.1(11)
_computing_cell_refinement       'CELL in IPDS'
_computing_data_collection       'EXPOSE in IPDS (Stoe & Cie, 1997)'
_computing_data_reduction        'INTEGRATE in IPDS'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2001)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Stoe IPDS'
_diffrn_measurement_method       \f
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.059
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            13184
_diffrn_reflns_theta_full        26
_diffrn_reflns_theta_max         26
_diffrn_reflns_theta_min         2.49
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.151
_exptl_absorpt_correction_T_max  0.975
_exptl_absorpt_correction_T_min  0.905
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(FACEIT in IPDS; Stoe & Cie, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.195
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1320
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.38
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.997
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         3223
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.997
_refine_ls_R_factor_all          0.058
_refine_ls_R_factor_gt           0.044
_refine_ls_shift/su_max          <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0760P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.109
_refine_ls_wR_factor_ref         0.115
_reflns_number_gt                2453
_reflns_number_total             3223
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd1214.cif
_cod_data_source_block           II
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               2012878
_cod_database_fobs_code          2012878