Structural elucidation of a methylenation reagent of esters: synthesis and reactivity of a dinuclear titanium(iii) methylene complex
Kurogi, Takashi; Kuroki, Kaito; Moritani, Shunsuke; Takai, Kazuhiko; Chemical Science 12 (2021) 3509–3515; doi:10.1039/D0SC06366E

data_1560121
_publ_section_title
;
 Structural elucidation of a methylenation reagent of esters: synthesis
 and reactivity of a dinuclear titanium(iii) methylene complex
;
_journal_issue                   10
_journal_name_full               'Chemical Science'
_journal_page_first              3509
_journal_page_last               3515
_journal_paper_doi               10.1039/D0SC06366E
_journal_volume                  12
_journal_year                    2021
_chemical_formula_moiety         'C13 H34 I2 N4 Zn2'
_chemical_formula_sum            'C13 H34 I2 N4 Zn2'
_chemical_formula_weight         630.98
_chemical_properties_physical    Air-sensitive,Moisture-sensitive
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2020-01-31
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3510 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-11-19 deposited with the CCDC.	2021-01-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.494(2)
_cell_length_b                   13.090(2)
_cell_length_c                   14.921(3)
_cell_measurement_reflns_used    7777
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.7
_cell_volume                     2245.0(7)
_computing_cell_refinement
'CrystalClear-SM Expert 2.0 r16 (Rigaku, 2014)'
_computing_data_collection
'CrystalClear-SM Expert 2.0 r16 (Rigaku, 2014)'
_computing_data_reduction
'CrystalClear-SM Expert 2.0 r16 (Rigaku, 2014)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 CCD
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device
;
AFC11 (Right): Eulerian 3 circle
;
_diffrn_measurement_device_type
;
Rigaku Saturn724+ (4x4 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support Fiber
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0478
_diffrn_reflns_av_unetI/netI     0.0644
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            12448
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.978
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.480
_diffrn_reflns_theta_min         2.730
_diffrn_source                   'Rotating Anode'
_exptl_absorpt_coefficient_mu    4.887
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.768
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Jacobson, R. (1998). REQAB. Private communication to the 
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.867
_exptl_crystal_description       block
_exptl_crystal_F_000             1224
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.770
_refine_diff_density_min         -0.853
_refine_diff_density_rms         0.157
_refine_ls_abs_structure_details
;
 Flack x determined using 1511 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.011(19)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     206
_refine_ls_number_reflns         5031
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.0415
_refine_ls_R_factor_gt           0.0315
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0173P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0581
_refine_ls_wR_factor_ref         0.0630
_reflns_Friedel_coverage         0.762
_reflns_Friedel_fraction_full    0.985
_reflns_Friedel_fraction_max     0.969
_reflns_number_gt                4216
_reflns_number_total             5031
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0sc06366e2.cif
_cod_data_source_block           Zn2CH2I2tmeda
_cod_depositor_comments
'Adding full bibliography for 1560116--1560121.cif.'
_cod_database_code               1560121
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.867
_shelx_estimated_absorpt_t_min   0.696
_olex2_submission_special_instructions 'No special instructions were received'