Double CO2 activation by 14-electron eta^8^-permethylpentalene titanium dialkyl complexes
Robert T. Cooper; F. Mark Chadwick; Andrew E. Ashley; Dermot O'Hare; Chem.Commun. 51 (2015) 11856–; doi:10.1039/C5cc04094A

data_7117482
_publ_section_title
;
 Double CO2 activation by 14-electron eta^8^-permethylpentalene titanium
 dialkyl complexes
;
_journal_name_full               Chem.Commun.
_journal_page_first              11856
_journal_paper_doi               10.1039/C5cc04094A
_journal_volume                  51
_journal_year                    2015
_chemical_absolute_configuration .
_chemical_compound_source        SYN
_chemical_formula_moiety         'C18 H24 O4 Ti1'
_chemical_formula_sum            'C18 H24 O4 Ti'
_chemical_formula_weight         352.29
_chemical_name_systematic        Pn*Ti(O2CMe)2
_chemical_properties_physical    'Air-sensitive, Moisture-sensitive'
_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   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             11-12-07
_audit_creation_method           CRYSTALS_ver_14.23
_audit_update_record
;
2015-05-07 deposited with the CCDC.
2015-06-18 downloaded from the CCDC.
;
_cell_angle_alpha                78.4790(11)
_cell_angle_beta                 88.7238(11)
_cell_angle_gamma                75.3323(12)
_cell_formula_units_Z            2
_cell_length_a                   8.0338(2)
_cell_length_b                   9.4658(2)
_cell_length_c                   11.9668(3)
_cell_measurement_reflns_used    3496
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     862.25(4)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 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 0.992
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device       Area
_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  0.019
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            12188
_diffrn_reflns_theta_full        26.392
_diffrn_reflns_theta_max         27.492
_diffrn_reflns_theta_min         5.140
_diffrn_standards_decay_%        .
_diffrn_standards_interval_count .
_diffrn_standards_interval_time  .
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.513
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.357
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             372
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: '
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.42
_refine_diff_density_min         -0.46
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9397
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         3922
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0428
_refine_ls_shift/su_max          0.0001467
_refine_ls_shift/su_mean         0.0000110
_refine_ls_structure_factor_coef Fsqd
_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: 
 27.9 41.6 20.8 5.61 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1122
_refine_ls_wR_factor_gt          0.1070
_refine_ls_wR_factor_ref         0.1122
_reflns_limit_h_max              10
_reflns_limit_h_min              -10
_reflns_limit_k_max              12
_reflns_limit_k_min              -11
_reflns_limit_l_max              15
_reflns_limit_l_min              0
_reflns_number_gt                3481
_reflns_number_total             3922
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   1.70
_oxford_diffrn_Wilson_scale      1.09
_oxford_refine_ls_r_factor_ref   0.0485
_oxford_refine_ls_scale          0.938(3)
_oxford_reflns_number_all        3922
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_oxford_structure_analysis_title 087fmc11
_cod_data_source_file            c5cc04094a2.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_atom_sites_solution_primary' value 'Direct' changed to 'direct'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

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

Automatic conversion script
Id: cif_fix_values 3392 2015-05-12 13:50:21Z andrius 
;
_cod_original_sg_symbol_H-M      'P -1 '
_cod_original_formula_sum        'C18 H24 O4 Ti1'
_cod_database_code               7117482
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
RIDE C   (   9,X'S) H   (  93,X'S) H   (  92,X'S) H   (  91,X'S) 
RIDE C   (  10,X'S) H   ( 103,X'S) H   ( 102,X'S) H   ( 101,X'S) 
RIDE C   (  11,X'S) H   ( 113,X'S) H   ( 112,X'S) H   ( 111,X'S) 
RIDE C   (  12,X'S) H   ( 123,X'S) H   ( 122,X'S) H   ( 121,X'S) 
RIDE C   (  13,X'S) H   ( 133,X'S) H   ( 132,X'S) H   ( 131,X'S) 
RIDE C   (  14,X'S) H   ( 143,X'S) H   ( 142,X'S) H   ( 141,X'S) 
RIDE C   (  16,X'S) H   ( 163,X'S) H   ( 162,X'S) H   ( 161,X'S) 
RIDE C   (  18,X'S) H   ( 183,X'S) H   ( 182,X'S) H   ( 181,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                                                                             
;