Bridgehead isomer effects in bis(phosphido)-bridged diiron hexacarbonyl proton reduction electrocatalysts.
Rahaman, Ahibur; Gimbert-Suriñach, Carolina; Ficks, Arne; Ball, Graham E.; Bhadbhade, Mohan; Haukka, Matti; Higham, Lee; Nordlander, Ebbe; Colbran, Stephen B.; Dalton transactions (Cambridge, England : 2003) 46 (2017) 3207–3222; doi:10.1039/c6dt01494a

data_7042180
_publ_section_title
;
 Bridgehead isomer effects in bis(phosphido)-bridged diiron hexacarbonyl
 proton reduction electrocatalysts.
;
_journal_issue                   10
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              3207
_journal_page_last               3222
_journal_paper_doi               10.1039/c6dt01494a
_journal_volume                  46
_journal_year                    2017
_chemical_formula_moiety         'C36 H30 Fe4 O6 P2'
_chemical_formula_sum            'C36 H30 Fe4 O6 P2'
_chemical_formula_weight         843.94
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-12-02 deposited with the CCDC.
2017-02-07 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.571(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.8594(16)
_cell_length_b                   12.0460(16)
_cell_length_c                   24.436(3)
_cell_measurement_reflns_used    9944
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.568
_cell_measurement_theta_min      2.407
_cell_volume                     3490.7(8)
_computing_cell_refinement       '<i>APEX2 </i>(Bruker, 2007)'
_computing_data_collection       '<i>APEX2 </i>(Bruker, 2007)'
_computing_data_reduction        '<i>APEX2 </i>(Bruker, 2007)'
_computing_molecular_graphics    '<i>SHELXTL-Plus</i> (Sheldrick, 2008)'
_computing_structure_refinement  '<i>SHELXL-97</i> (Sheldrick, 2008)'
_computing_structure_solution    '<i>SHELXS-97</i> (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker kappa APEXII CCD Diffractometer'
_diffrn_measurement_method       '\f scans, and \w scans with \k offsets'
_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  0.0442
_diffrn_reflns_av_sigmaI/netI    0.0294
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            39766
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.37
_exptl_absorpt_coefficient_mu    1.766
_exptl_absorpt_correction_T_max  0.9138
_exptl_absorpt_correction_T_min  0.6452
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2001)'
_exptl_crystal_colour            'Bright yellow'
_exptl_crystal_density_diffrn    1.606
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plates
_exptl_crystal_F_000             1712
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.475
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         6136
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0396
_refine_ls_R_factor_gt           0.0269
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0306P)^2^+1.5102P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0608
_refine_ls_wR_factor_ref         0.0672
_reflns_number_gt                5014
_reflns_number_total             6136
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6dt01494a2.cif
_cod_data_source_block           carolina8_021byn
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 7042178--7042182.cif.
;
_cod_original_sg_symbol_Hall     '-P 2yn '
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7042180