Syntheses and Structural Diversity of Group 2 and Group 12 Tris(pyrazolyl)methaneand Zwitterionic Tris(pyrazolyl)methanideCompounds
Cushion, Michael G.; Meyer, Jens; Heath, Alex; Schwarz, Andrew D.; Fernández, Ignacio; Breher, Frank; Mountford, Philip; Organometallics 29 (2010) 1174–; doi:10.1021/om901013b

data_4067546
_publ_section_title
;
 Syntheses and Structural Diversity of Group 2 and Group 12
 Tris(pyrazolyl)methaneand Zwitterionic Tris(pyrazolyl)methanideCompounds
;
_journal_issue                   5
_journal_name_full               Organometallics
_journal_page_first              1174
_journal_paper_doi               10.1021/om901013b
_journal_volume                  29
_journal_year                    2010
_chemical_formula_moiety         'C24 H50 Mg1 N8 Si4'
_chemical_formula_sum            'C24 H50 Mg N8 Si4'
_chemical_formula_weight         587.36
_chemical_name_systematic
;
Mg{k2N-HC(Me2pz)3}{N(SiHMe2)2}2
;
_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
_audit_creation_method           CRYSTALS_ver_12.86
_cell_angle_alpha                90
_cell_angle_beta                 104.8343(13)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3901(3)
_cell_length_b                   18.6622(5)
_cell_length_c                   16.4869(4)
_cell_measurement_reflns_used    7476
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     3387.72(15)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.054
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            14527
_diffrn_reflns_theta_full        26.129
_diffrn_reflns_theta_max         27.504
_diffrn_reflns_theta_min         5.093
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.221
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.98
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.152
_exptl_crystal_description       plate
_exptl_crystal_F_000             1272
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.44
_refine_diff_density_min         -0.41
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1400
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     350
_refine_ls_number_reflns         3825
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1100
_refine_ls_R_factor_gt           0.0464
_refine_ls_shift/su_max          0.000444
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 1.13 1.02 1.24 0.422 0.384 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0720
_refine_ls_wR_factor_gt          0.0457
_refine_ls_wR_factor_ref         0.0457
_reflns_limit_h_max              14
_reflns_limit_h_min              -14
_reflns_limit_k_max              24
_reflns_limit_k_min              0
_reflns_limit_l_max              21
_reflns_limit_l_min              0
_reflns_number_gt                3825
_reflns_number_total             7686
_reflns_threshold_expression     I>3.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.56
_oxford_diffrn_Wilson_scale      13.88
_oxford_refine_ls_scale          0.2259(4)
_cod_data_source_file            om901013b_si_001.cif
_cod_data_source_block           compound_15
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_Hall     '-P 2yn '
_cod_original_sg_symbol_H-M      'P 1 21/n 1 '
_cod_original_formula_sum        'C24 H50 Mg1 N8 Si4'
_cod_database_code               4067546