Biologically active [Pd2L4](4+) quadruply-stranded helicates: stability and cytotoxicity.
McNeill, Samantha M.; Preston, Dan; Lewis, James E. M.; Robert, Anja; Knerr-Rupp, Katrin; Graham, Danyon O.; Wright, James R.; Giles, Gregory I.; Crowley, James D.; Dalton transactions (Cambridge, England : 2003) 44 (2015) 11129–11136; doi:10.1039/c5dt01259g

data_7035169
_publ_section_title
;
 Biologically active [Pd2L4](4+) quadruply-stranded helicates: stability
 and cytotoxicity.
;
_journal_issue                   24
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11129
_journal_page_last               11136
_journal_paper_doi               10.1039/c5dt01259g
_journal_volume                  44
_journal_year                    2015
_chemical_formula_sum            'C50 H56 Br4 N10 Pd2'
_chemical_formula_weight         1329.48
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_audit_update_record
;
2015-01-28 deposited with the CCDC.
2015-05-14 downloaded from the CCDC.
;
_cell_angle_alpha                75.175(2)
_cell_angle_beta                 85.812(3)
_cell_angle_gamma                81.398(3)
_cell_formula_units_Z            2
_cell_length_a                   12.2308(5)
_cell_length_b                   12.6784(4)
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_cell_measurement_reflns_used    16903
_cell_measurement_temperature    100.0(1)
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_cell_measurement_theta_min      3.6430
_cell_volume                     3029.69(18)
_computing_cell_refinement
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
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_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
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_computing_data_reduction
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
;
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.0(1)
_diffrn_detector_area_resol_mean 5.1725
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0745
_diffrn_reflns_av_unetI/netI     0.0589
_diffrn_reflns_laue_measured_fraction_full 1.000
_diffrn_reflns_laue_measured_fraction_max 0.975
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            44918
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.975
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         74.979
_diffrn_reflns_theta_min         3.640
_diffrn_source                   'sealed X-ray tube'
_exptl_absorpt_coefficient_mu    8.177
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.44620
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.457
_exptl_crystal_description       block
_exptl_crystal_F_000             1316
_exptl_crystal_size_max          0.2277
_exptl_crystal_size_mid          0.0757
_exptl_crystal_size_min          0.0668
_platon_squeeze_details
;
electron density that could not be appropriately modelled, with
the number of electrons consistent with four chloroform 
molecules.
;
_refine_diff_density_max         4.332
_refine_diff_density_min         -2.078
_refine_diff_density_rms         0.319
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.538
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     603
_refine_ls_number_reflns         12182
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.538
_refine_ls_R_factor_all          0.0863
_refine_ls_R_factor_gt           0.0728
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2181
_refine_ls_wR_factor_ref         0.2308
_reflns_Friedel_coverage         0.000
_reflns_number_gt                9908
_reflns_number_total             12182
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5dt01259g2.cif
_cod_data_source_block           Pd2(NHC)2(bntrz)Br4
_cod_depositor_comments
'Adding full bibliography for 7035165--7035170.cif.'
_cod_database_code               7035169
_shelxl_version_number           2014-3
_shelx_res_checksum              57983
_platon_squeeze_void_probe_radius 1.20