N–P Bond Cleavage Induced Ring Formation of Cyclosilazanes from Reactions of Aryl(phosphanyl)aminotrichlorosilanes with Lithium Alkynyls
Wang, Jinjin; Liu, Rui; Ruan, Wenqing; Li, Yan; Mondal, Kartik Chandra; Roesky, Herbert W.; Zhu, Hongping; Organometallics 33 (2014) 2696–; doi:10.1021/om401095n

data_4083315
_publ_section_title
;
 N--P Bond Cleavage Induced Ring Formation of Cyclosilazanes from
 Reactions of Aryl(phosphanyl)aminotrichlorosilanes with Lithium Alkynyls
;
_journal_issue                   11
_journal_name_full               Organometallics
_journal_page_first              2696
_journal_paper_doi               10.1021/om401095n
_journal_volume                  33
_journal_year                    2014
_chemical_formula_sum            'C64 H70 N2 Si2'
_chemical_formula_weight         923.40
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                79.92(3)
_cell_angle_beta                 82.41(3)
_cell_angle_gamma                86.82(3)
_cell_formula_units_Z            2
_cell_length_a                   12.609(3)
_cell_length_b                   13.585(3)
_cell_length_c                   16.459(3)
_cell_measurement_temperature    173(2)
_cell_volume                     2750.0(11)
_computing_cell_refinement       'rapid auto (rigaku 2004)'
_computing_data_collection       'rapid auto (rigaku 2004)'
_computing_data_reduction        'rapid auto (rigaku 2004)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'rigaku raxis rapid IP area detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0581
_diffrn_reflns_av_sigmaI/netI    0.0548
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            36795
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         3.05
_exptl_absorpt_coefficient_mu    0.105
_exptl_absorpt_correction_T_max  0.9794
_exptl_absorpt_correction_T_min  0.9693
_exptl_absorpt_correction_type   'empirical absorption correction'
_exptl_absorpt_process_details   'ABSCOR by T.Higashi 8 March, 1995'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.115
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.482
_refine_diff_density_min         -0.438
_refine_diff_density_rms         0.064
_refine_ls_extinction_coef       0.014(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.156
_refine_ls_hydrogen_treatment    'refined in a riding mode to the carrier atom'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     643
_refine_ls_number_reflns         10017
_refine_ls_number_restraints     744
_refine_ls_restrained_S_all      1.150
_refine_ls_R_factor_all          0.1040
_refine_ls_R_factor_gt           0.0660
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1303P)^2^+0.1181P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1856
_refine_ls_wR_factor_ref         0.2365
_reflns_number_gt                6193
_reflns_number_total             10017
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om401095n_si_002.cif
_cod_data_source_block           compound_8
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 4083311--4083318.cif.

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_cell_volume        2749.9(9)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4083315