Facile syntheses of thiophene-substituted 1,4-diazabutadiene (α-diimine) ligands and their conversion to phosphenium triiodide salts
Powell, Adam B.; Brown, Jaclyn R.; Vasudevan, Kalyan V.; Cowley, Alan H.; Dalton Transactions  (2009) 2521–2527; doi:10.1039/b820202h

data_7000927
_publ_section_title
;
 Facile syntheses of thiophene-substituted 1,4-diazabutadiene
 (\a-diimine) ligands and their conversion to phosphenium triiodide
 salts
;
_journal_issue                   14
_journal_name_full               'Dalton Transactions'
_journal_page_first              2521
_journal_page_last               2527
_journal_paper_doi               10.1039/b820202h
_journal_year                    2009
_chemical_formula_moiety         'C26 H24 N2 S2'
_chemical_formula_sum            'C26 H24 N2 S2'
_chemical_formula_weight         428.59
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                81.21(3)
_cell_angle_beta                 86.96(3)
_cell_angle_gamma                73.28(3)
_cell_formula_units_Z            2
_cell_length_a                   9.0969(18)
_cell_length_b                   9.3564(19)
_cell_length_c                   13.810(3)
_cell_measurement_reflns_used    12267
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     1112.5(4)
_computing_cell_refinement       'Collect software, Nonius B.V. 1998'
_computing_data_collection       'Collect software, Nonius B.V. 1998'
_computing_data_reduction
;
DENZO and Scalepack (Otwinoski and Minor, 1997)
;
_computing_molecular_graphics    'XP SHELXTL/PC, Siemens Analytical'
_computing_structure_refinement  'XL SHELXTL/PC, Siemens Analytical'
_computing_structure_solution
;
SIR97 - Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C.,
Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R.
;
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0328
_diffrn_reflns_av_sigmaI/netI    0.0904
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7307
_diffrn_reflns_theta_full        27.43
_diffrn_reflns_theta_max         27.43
_diffrn_reflns_theta_min         2.77
_exptl_absorpt_coefficient_mu    0.255
_exptl_absorpt_correction_T_max  .997
_exptl_absorpt_correction_T_min  .992
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'DENZO and Scalepack (Otwinoski and Minor, 1997)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.280
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             452
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.479
_refine_diff_density_min         -0.490
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         4990
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.1019
_refine_ls_R_factor_gt           0.0602
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0490P)^2^+0.8714P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1209
_refine_ls_wR_factor_ref         0.1371
_reflns_number_gt                3441
_reflns_number_total             4990
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b820202h.txt
_cod_data_source_block           apkv091a
_cod_original_cell_volume        1112.4(4)
_cod_original_sg_symbol_Hall     -p1
_cod_original_sg_symbol_H-M      p-1
_cod_database_code               7000927