A highly stable polypyridyl-based cobalt catalyst for homo- and heterogeneous photocatalytic water reduction.
Guttentag, Miguel; Rodenberg, Alexander; Bachmann, Cyril; Senn, Anna; Hamm, Peter; Alberto, Roger; Dalton transactions (Cambridge, England : 2003) 42 (2013) 334–337; doi:10.1039/c2dt31699d

data_7020693
_publ_section_title
;
 A highly stable polypyridyl-based cobalt catalyst for homo- and
 heterogeneous photocatalytic water reduction.
;
_journal_issue                   2
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              334
_journal_page_last               337
_journal_paper_doi               10.1039/c2dt31699d
_journal_volume                  42
_journal_year                    2013
_chemical_formula_sum            'C21 H16 Br2 Co N4 O'
_chemical_formula_weight         559.13
_chemical_name_systematic
;
?
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.4451(3)
_cell_length_b                   13.4503(3)
_cell_length_c                   9.54082(18)
_cell_measurement_reflns_used    13025
_cell_measurement_temperature    183(2)
_cell_measurement_theta_max      34.8995
_cell_measurement_theta_min      2.6121
_cell_volume                     1982.02(7)
_computing_cell_refinement       'CrysAlis^Pro^ (Oxford, 2007)'
_computing_data_collection       'CrysAlis^Pro^ (Oxford, 2007)'
_computing_data_reduction        'CrysAlis^Pro^ (Oxford, 2007)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      183(2)
_diffrn_detector_area_resol_mean 10.4498
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Oxford Xcalibur Ruby CCD'
_diffrn_measurement_method       '\o oscillation 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  0.0456
_diffrn_reflns_av_sigmaI/netI    0.0625
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            36727
_diffrn_reflns_theta_full        33.14
_diffrn_reflns_theta_max         33.14
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    4.919
_exptl_absorpt_correction_T_max  0.7246
_exptl_absorpt_correction_T_min  0.5175
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.66 (release 28-04-2010 CrysAlis171 .NET)
(compiled Apr 28 2010,14:27:37)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.874
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1100
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.07
_refine_diff_density_max         1.217
_refine_diff_density_min         -0.520
_refine_diff_density_rms         0.079
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.007(4)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.858
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         7538
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.858
_refine_ls_R_factor_all          0.0442
_refine_ls_R_factor_gt           0.0290
_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^)+(0.0186P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0434
_refine_ls_wR_factor_ref         0.0447
_reflns_number_gt                5644
_reflns_number_total             7538
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt31699d.txt
_cod_data_source_block           mg211010
_cod_original_sg_symbol_H-M      Pna21
_cod_database_code               7020693