Concomitant Twinning and Polymorphism of Ti(C5H4tBu)2Cl2
Guzei, Ilia A.; Mitra, Amitabha; Spencer, Lara C.; Crystal Growth & Design 9 (2009) 2287–; doi:10.1021/cg8010772

data_4509234
_publ_section_title
;
 Concomitant Twinning and Polymorphism of Ti(C5H4tBu)2Cl2
;
_journal_issue                   5
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              2287
_journal_paper_doi               10.1021/cg8010772
_journal_volume                  9
_journal_year                    2009
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C18 H26 Cl2 Ti'
_chemical_formula_sum            'C18 H26 Cl2 Ti'
_chemical_formula_weight         361.19
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.71730(10)
_cell_length_b                   12.8649(2)
_cell_length_c                   13.1891(2)
_cell_measurement_reflns_used    3143
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      68.24
_cell_measurement_theta_min      4.80
_cell_volume                     1818.47(4)
_computing_cell_refinement       'SAINT Ver. 7.24A (Bruker-AXS, 2007)'
_computing_data_collection       'APEX2 Ver. 2.1-4 (Bruker-AXS, 2007)'
_computing_data_reduction        'SAINT Ver. 7.24A'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '0.50\% \w and 0.5 \% \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           Cu-K\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0436
_diffrn_reflns_av_sigmaI/netI    0.0352
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            15490
_diffrn_reflns_theta_full        68.24
_diffrn_reflns_theta_max         68.24
_diffrn_reflns_theta_min         4.80
_exptl_absorpt_coefficient_mu    6.602
_exptl_absorpt_correction_T_max  0.1680
_exptl_absorpt_correction_T_min  0.1512
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS  (Bruker-AXS, 2007)
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.44
_exptl_crystal_size_min          0.42
_refine_diff_density_max         0.153
_refine_diff_density_min         -0.191
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.003(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     197
_refine_ls_number_reflns         3217
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.0465
_refine_ls_R_factor_gt           0.0308
_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^)+(0.0415P)^2^+0.0245P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0772
_refine_ls_wR_factor_ref         0.0855
_reflns_number_gt                2440
_reflns_number_total             3217
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            cg8010772sup1.cif
_cod_data_source_block           phasetrans2_rt_p212121
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_Hall     'P 2ac 2ab   '
_cod_original_sg_symbol_H-M      'P 21 21 21  '
_cod_database_code               4509234