Synthesis and redox reactivity of a phosphine-ligated dichromium paddlewheel
Reed J. Eisenhart; Rebecca K. Carlson; Kelsey M. Boyle; Laura Gagliardi; Connie C. Lu; Inorganica Chimica Acta 424 (2015) 336–344; doi:

data_1518982
_publ_section_title
;
 Synthesis and redox reactivity of a phosphine-ligated dichromium
 paddlewheel
;
_journal_name_full               'Inorganica Chimica Acta'
_journal_page_first              336
_journal_page_last               344
_journal_volume                  424
_journal_year                    2015
_chemical_formula_moiety         'C52 H80 Cr2 N4 O2 P4'
_chemical_formula_sum            'C52 H80 Cr2 N4 O2 P4'
_chemical_formula_weight         1021.08
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_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     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 109.9490(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.9852(14)
_cell_length_b                   10.9414(7)
_cell_length_c                   22.4321(15)
_cell_measurement_reflns_used    9984
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.01
_cell_measurement_theta_min      2.24
_cell_volume                     5072.2(6)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'APEX II, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'SHELXTL, Bruker'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX II CCD'
_diffrn_measurement_method       'area detector, omega scans per phi'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0206
_diffrn_reflns_av_sigmaI/netI    0.0146
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            23741
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.599
_exptl_absorpt_correction_T_max  0.9426
_exptl_absorpt_correction_T_min  0.8896
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing, 1995'
_exptl_crystal_colour            Brown
_exptl_crystal_density_diffrn    1.337
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             2176
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.344
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     297
_refine_ls_number_reflns         4473
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0279
_refine_ls_R_factor_gt           0.0258
_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^)+(0.0304P)^2^+7.4532P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0673
_refine_ls_wR_factor_ref         0.0688
_reflns_number_gt                4187
_reflns_number_total             4473
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ICA-2015-424-336-344-2.cif
_cod_data_source_block           12207_0m_complex3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 3105 2015-03-04 15:46:00Z robertas 
;
_cod_original_sg_symbol_H-M      C2/C
_cod_database_code               1518982