Metal-Ligand Covalency Enables Room Temperature Molecular Qubit Candidates
Fataftah, Majed S.; Krzyaniak, Matthew D.; Vlaisavljevich, Bess; Wasielewski, Michael R.; Zadrozny, Joseph; Freedman, Danna; Chemical Science  (2019) –; doi:10.1039/C9SC00074G

data_1551190
_publ_section_title
;
 Metal-Ligand Covalency Enables Room Temperature Molecular Qubit
 Candidates
;
_journal_name_full               'Chemical Science'
_journal_paper_doi               10.1039/C9SC00074G
_journal_year                    2019
_chemical_formula_moiety         'C18 H12 Se6 Ti, 2(C24 H20 P)'
_chemical_formula_sum            'C66 H52 P2 Se6 Ti'
_chemical_formula_weight         1428.67
_chemical_name_systematic
'tetraphenyl phosphonium titanium(IV) tris(diselenocatecholate)'
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_block_doi                 10.5517/ccdc.csd.cc210d8r
_audit_creation_date             2018-03-07
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2018-11-05 deposited with the CCDC.    2019-05-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 114.114(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   25.191(3)
_cell_length_b                   13.8608(13)
_cell_length_c                   17.8294(18)
_cell_measurement_reflns_used    9771
_cell_measurement_temperature    100
_cell_measurement_theta_max      27.84
_cell_measurement_theta_min      2.40
_cell_volume                     5682.2(11)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      99.95
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0508
_diffrn_reflns_av_unetI/netI     0.0219
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -33
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            80453
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.035
_diffrn_reflns_theta_min         1.715
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.092
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6251
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0783 before and 0.0479 after correction. The Ratio of minimum to maximum transmission is 0.8384. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            'dull dark green'
_exptl_crystal_colour_lustre     dull
_exptl_crystal_colour_modifier   dark
_exptl_crystal_colour_primary    green
_exptl_crystal_density_diffrn    1.670
_exptl_crystal_description       plate
_exptl_crystal_F_000             2816
_exptl_crystal_preparation
'Synthesized by reaction of Ti(NMe2)4 with diseleno catechol in DMF with Ph4PBr'
_exptl_crystal_recrystallization_method 'Crystallized from DMF at -35 C'
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.647
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.080
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     339
_refine_ls_number_reflns         6847
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.076
_refine_ls_R_factor_all          0.0320
_refine_ls_R_factor_gt           0.0248
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0250P)^2^+12.7200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0578
_refine_ls_wR_factor_ref         0.0604
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6009
_reflns_number_total             6847
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9sc00074g2.cif
_cod_data_source_block           msf5_123
_cod_original_cell_volume        5682.1(11)
_cod_database_code               1551190
_shelx_shelxl_version_number     2016/6
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C008(H008), C00A(H00A), C00B(H00B), C00E(H00E), C00F(H00F), C00H(H00H),
 C00I(H00I), C00J(H00J), C00K(H00K), C00M(H00M), C00N(H00N), C00O(H00O),
 C00P(H00P), C00Q(H00Q), C00R(H00R), C00S(H00S), C00T(H00T), C00U(H00U),
 C00V(H00V), C00W(H00W), C00X(H00X), C00Y(H00Y), C00Z(H00Z), C010(H010),
 C011(H011), C012(H012)
;
_shelx_res_checksum              94489
_olex2_exptl_crystal_mounting_method 'Mounted under paratone oil'
_olex2_submission_original_sample_id 'compound 6'
_olex2_submission_special_instructions 'No special instructions were received'