Catalytic C=N bond metathesis of carbodiimides by group 4 and 5 imido complexes supported by guanidinate ligands
Ong, Tiow-Gan; Yap, Glenn P. A.; Richeson, Darrin S.; Chemical Communications (Cambridge, United Kingdom)  (2003) 2612–2613; doi:10.1039/b308710g

data_7113628
_publ_section_title
;
 Catalytic C=N bond metathesis of carbodiimides by group 4 and 5 imido
 complexes supported by guanidinate ligands
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   20
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              2612
_journal_page_last               2613
_journal_paper_doi               10.1039/b308710g
_journal_year                    2003
_chemical_formula_sum            'C36 H71 Cl N7 O3 Ta'
_chemical_formula_weight         866.40
_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                 95.98(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.002(3)
_cell_length_b                   22.236(5)
_cell_length_c                   21.629(9)
_cell_measurement_reflns_used    46
_cell_measurement_temperature    208(2)
_cell_measurement_theta_max      19.99
_cell_measurement_theta_min      1.47
_cell_volume                     4306(3)
_computing_cell_refinement       'SMART, Bruker (2000)'
_computing_data_collection       'SMART, Bruker (2000)'
_computing_data_reduction        'XPREP, Bruker (2000)'
_computing_molecular_graphics    'SHELXTL, Bruker (2000)'
_computing_publication_material  'SHELXTL, Bruker (2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      208(2)
_diffrn_measured_fraction_theta_full 0.881
_diffrn_measured_fraction_theta_max 0.881
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0672
_diffrn_reflns_av_sigmaI/netI    0.1090
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            6906
_diffrn_reflns_theta_full        19.99
_diffrn_reflns_theta_max         19.99
_diffrn_reflns_theta_min         1.32
_diffrn_standards_decay_%        <1
_exptl_absorpt_coefficient_mu    2.654
_exptl_absorpt_correction_T_max  0.7772
_exptl_absorpt_correction_T_min  0.6916
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2000)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.337
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1800
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         2.399
_refine_diff_density_min         -4.440
_refine_diff_density_rms         0.249
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         3540
_refine_ls_number_restraints     400
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.1241
_refine_ls_R_factor_gt           0.0993
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2398
_refine_ls_wR_factor_ref         0.2689
_reflns_number_gt                2507
_reflns_number_total             3540
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7104858
_cod_data_source_file            b308710g.txt
_cod_data_source_block           dr2124
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/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 
;
_cod_original_cell_volume        4306(2)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7113628