A Tantalum Methylidene Complex Supported by a Robust and Sterically Encumbering Aryloxide Ligand
Searles, Keith; Pinter, Balazs; Chen, Chun-Hsing; Mindiola, Daniel J.; Organometallics 33 (2014) 4192–; doi:10.1021/om500197k

data_4084182
_publ_section_title
;
 A Tantalum Methylidene Complex Supported by a Robust and Sterically
 Encumbering Aryloxide Ligand
;
_journal_issue                   16
_journal_name_full               Organometallics
_journal_page_first              4192
_journal_paper_doi               10.1021/om500197k
_journal_volume                  33
_journal_year                    2014
_chemical_formula_moiety         'C75 H75 O2 Ta1'
_chemical_formula_sum            'C75 H75 O2 Ta'
_chemical_formula_weight         1189.36
_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   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             13-01-22
_audit_creation_method           CRYSTALS_ver_14.40
_cell_angle_alpha                90
_cell_angle_beta                 104.902(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.0358(15)
_cell_length_b                   16.2791(14)
_cell_length_c                   21.4861(18)
_cell_measurement_reflns_used    9701
_cell_measurement_temperature    150
_cell_measurement_theta_max      30
_cell_measurement_theta_min      2
_cell_volume                     6096.3(9)
_computing_cell_refinement       'Apex2 (Bruker AXS, 2006)'
_computing_data_collection       'Apex2 (Bruker AXS, 2006)'
_computing_data_reduction        'Apex2 (Bruker AXS, 2006)'
_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 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Bruker Kappa Apex2'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.029
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            70804
_diffrn_reflns_theta_full        29.560
_diffrn_reflns_theta_max         30.164
_diffrn_reflns_theta_min         1.590
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.849
_exptl_absorpt_correction_T_max  0.72
_exptl_absorpt_correction_T_min  0.55
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
; 
 Analytical Absorption (De Meulenaer & Tompa, 1965) 
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.296
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'block fragment'
_exptl_crystal_F_000             2456
_exptl_crystal_size_max          0.393
_exptl_crystal_size_mid          0.319
_exptl_crystal_size_min          0.178
_refine_diff_density_max         0.82
_refine_diff_density_min         -0.86
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9895
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     703
_refine_ls_number_reflns         17885
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0287
_refine_ls_R_factor_gt           0.0218
_refine_ls_shift/su_max          0.0019512
_refine_ls_shift/su_mean         0.0000545
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.03P)^2^ + 5.31P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0585
_refine_ls_wR_factor_gt          0.0541
_refine_ls_wR_factor_ref         0.0585
_reflns_limit_h_max              24
_reflns_limit_h_min              -25
_reflns_limit_k_max              22
_reflns_limit_k_min              0
_reflns_limit_l_max              30
_reflns_limit_l_min              0
_reflns_number_gt                15282
_reflns_number_total             17934
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
_oxford_refine_ls_r_factor_ref   0.0287
_oxford_refine_ls_scale          0.061747(4)
_oxford_reflns_number_all        17885
_oxford_reflns_threshold_expression_ref I>0.0\s(I)
_oxford_structure_analysis_title 'mo_13007_0m in P2(1)/n'
_cod_data_source_file            om500197k_si_002.cif
_cod_data_source_block           13007
_cod_depositor_comments
'Adding full bibliography for 4084182--4084184.cif.'
_cod_original_sg_symbol_H-M      'P 1 21/n 1 '
_cod_original_formula_sum        'C75 H75 O2 Ta1'
_cod_database_code               4084182
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
RIDE C   (   3,X'S) H   (  31,X'S) 
RIDE C   (   5,X'S) H   (  51,X'S) 
RIDE C   (   7,X'S) H   (  71,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) 
RIDE C   (  10,X'S) H   ( 101,X'S) 
RIDE C   (  11,X'S) H   ( 111,X'S) 
RIDE C   (  12,X'S) H   ( 121,X'S) 
RIDE C   (  13,X'S) H   ( 131,X'S) 
RIDE C   (  15,X'S) H   ( 151,X'S) 
RIDE C   (  16,X'S) H   ( 161,X'S) 
RIDE C   (  17,X'S) H   ( 171,X'S) 
RIDE C   (  18,X'S) H   ( 181,X'S) 
RIDE C   (  19,X'S) H   ( 191,X'S) 
RIDE C   (  20,X'S) H   ( 201,X'S) 
RIDE C   (  22,X'S) H   ( 221,X'S) 
RIDE C   (  23,X'S) H   ( 231,X'S) 
RIDE C   (  24,X'S) H   ( 241,X'S) 
RIDE C   (  25,X'S) H   ( 251,X'S) 
RIDE C   (  26,X'S) H   ( 261,X'S) 
RIDE C   (  28,X'S) H   ( 281,X'S) 
RIDE C   (  29,X'S) H   ( 291,X'S) 
RIDE C   (  30,X'S) H   ( 301,X'S) 
RIDE C   (  31,X'S) H   ( 311,X'S) 
RIDE C   (  32,X'S) H   ( 321,X'S) 
RIDE C   (  34,X'S) H   ( 341,X'S) H   ( 342,X'S) H   ( 343,X'S) 
RIDE C   (  35,X'S) H   ( 351,X'S) H   ( 352,X'S) H   ( 353,X'S) 
RIDE C   (  36,X'S) H   ( 361,X'S) H   ( 362,X'S) H   ( 363,X'S) 
RIDE C   (  39,X'S) H   ( 391,X'S) 
RIDE C   (  41,X'S) H   ( 411,X'S) 
RIDE C   (  43,X'S) H   ( 431,X'S) 
RIDE C   (  45,X'S) H   ( 451,X'S) 
RIDE C   (  46,X'S) H   ( 461,X'S) 
RIDE C   (  47,X'S) H   ( 471,X'S) 
RIDE C   (  48,X'S) H   ( 481,X'S) 
RIDE C   (  49,X'S) H   ( 491,X'S) 
RIDE C   (  51,X'S) H   ( 511,X'S) 
RIDE C   (  52,X'S) H   ( 521,X'S) 
RIDE C   (  53,X'S) H   ( 531,X'S) 
RIDE C   (  54,X'S) H   ( 541,X'S) 
RIDE C   (  55,X'S) H   ( 551,X'S) 
RIDE C   (  56,X'S) H   ( 561,X'S) 
RIDE C   (  58,X'S) H   ( 581,X'S) 
RIDE C   (  59,X'S) H   ( 591,X'S) 
RIDE C   (  60,X'S) H   ( 601,X'S) 
RIDE C   (  61,X'S) H   ( 611,X'S) 
RIDE C   (  62,X'S) H   ( 621,X'S) 
RIDE C   (  64,X'S) H   ( 641,X'S) 
RIDE C   (  65,X'S) H   ( 651,X'S) 
RIDE C   (  66,X'S) H   ( 661,X'S) 
RIDE C   (  67,X'S) H   ( 671,X'S) 
RIDE C   (  68,X'S) H   ( 681,X'S) 
RIDE C   (  70,X'S) H   ( 701,X'S) H   ( 702,X'S) H   ( 703,X'S) 
RIDE C   (  71,X'S) H   ( 711,X'S) H   ( 712,X'S) H   ( 713,X'S) 
RIDE C   (  72,X'S) H   ( 721,X'S) H   ( 722,X'S) H   ( 723,X'S) 
RIDE C   (  73,X'S) H   ( 731,X'S) H   ( 732,X'S) H   ( 733,X'S) 
RIDE C   (  74,X'S) H   ( 741,X'S) H   ( 742,X'S) H   ( 743,X'S) 
RIDE C   (  75,X'S) H   ( 751,X'S) H   ( 752,X'S) H   ( 753,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;