{μ-[Dimethyl(1,1,2-trimethylpropyl)silyl](2-pyridylmethyl)amido}bis[methylzinc(II)]
Koch, Christian; Görls, Helmar; Westerhausen, Matthias; Acta Crystallographica Section E 63 (2007) m2732–m2732; doi:10.1107/S1600536807049847

data_2215881
_publ_section_title
{\m-[Dimethyl(1,1,2-trimethylpropyl)silyl](2-pyridylmethyl)amido}bis[methylzinc(II)]
_journal_coeditor_code           DN2241
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              m2732
_journal_page_last               m2732
_journal_paper_doi               10.1107/S1600536807049847
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          '[Zn2 (C H3)2 (C14 H25 N2 Si)2]'
_chemical_formula_moiety         'C30 H56 N4 Si2 Zn2'
_chemical_formula_sum            'C30 H56 N4 Si2 Zn2'
_chemical_formula_weight         659.71
_chemical_name_systematic
;
{\m-[Dimethyl(1,1,2-trimethylpropyl)silyl](2-
pyridylmethyl)amido}bis[methylzinc(II)]
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 99.83(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.2939(19)
_cell_length_b                   9.888(2)
_cell_length_c                   18.124(4)
_cell_measurement_reflns_used    10869
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      27.44
_cell_measurement_theta_min      2.28
_cell_volume                     1641.1(6)
_computing_cell_refinement       'DENZO (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction        'DENZO (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
'ORTEPIII (Burnett & Johnson, 1996) and ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      183(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f and \w'
_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  0.0609
_diffrn_reflns_av_sigmaI/netI    0.0655
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            10869
_diffrn_reflns_theta_full        27.44
_diffrn_reflns_theta_max         27.44
_diffrn_reflns_theta_min         2.28
_exptl_absorpt_coefficient_mu    1.560
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.335
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.458
_refine_diff_density_min         -0.457
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     179
_refine_ls_number_reflns         3737
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.001
_refine_ls_R_factor_all          0.0716
_refine_ls_R_factor_gt           0.0415
_refine_ls_shift/su_max          0.013
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0467P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0866
_refine_ls_wR_factor_ref         0.0974
_reflns_number_gt                2725
_reflns_number_total             3737
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            dn2241.cif
_cod_data_source_block           I
_cod_original_cell_volume        1641.2(6)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2215881
_cod_database_fobs_code          2215881