Steric Enhancement of Group 12 Metal Hydride Stability and the Reaction of an Arylzinc Hydride with Tetramethylpiperidinyl Oxide (TEMPO)
Zhu, Zhongliang; Fettinger, James C.; Olmstead, Marilyn M.; Power, Philip P.; Organometallics 28 (2009) 2091–; doi:10.1021/om900005t

data_4069069
_publ_section_title
;
 Steric Enhancement of Group 12 Metal Hydride Stability and the Reaction
 of an Arylzinc Hydride with Tetramethylpiperidinyl Oxide (TEMPO)
;
_journal_issue                   7
_journal_name_full               Organometallics
_journal_page_first              2091
_journal_paper_doi               10.1021/om900005t
_journal_volume                  28
_journal_year                    2009
_chemical_formula_sum            'C48 H75 N O Si Zn'
_chemical_formula_weight         775.55
_chemical_name_common            4-TMS-Ar*ZnTEMPO
_chemical_name_systematic
; 
 ? 
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.026(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.5369(9)
_cell_length_b                   29.196(3)
_cell_length_c                   15.2128(13)
_cell_measurement_reflns_used    2116
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      27.25
_cell_measurement_theta_min      3.02
_cell_volume                     4673.5(7)
_computing_cell_refinement       'SAINT (7.16b) (Bruker, 2004)'
_computing_data_collection       'Apex2 (2.1.2.21) (Bruker, 2005)'
_computing_data_reduction        'SAINT (7.16b) (Bruker, 2004)'
_computing_molecular_graphics    'SHELXTL 5.1, XP (Sheldrick, 1994)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0359
_diffrn_reflns_av_sigmaI/netI    0.0280
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       37
_diffrn_reflns_limit_k_min       -37
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            51956
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.69
_exptl_absorpt_coefficient_mu    0.584
_exptl_absorpt_correction_T_max  0.9233
_exptl_absorpt_correction_T_min  0.8531
_exptl_absorpt_correction_type   'Empirical, SADABS (multi-scan)'
_exptl_absorpt_process_details   'SADABS 2.10 (Sheldrick, 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.102
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1688
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.700
_refine_diff_density_min         -0.548
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     503
_refine_ls_number_reflns         10702
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0573
_refine_ls_R_factor_gt           0.0450
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0553P)^2^+4.0632P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1117
_refine_ls_wR_factor_ref         0.1198
_reflns_number_gt                8793
_reflns_number_total             10702
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om900005t_si_002.cif
_cod_data_source_block           zz49
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4069069