Proton NMR Study of Cr-Co Heterometallic Wheel Complexes
E. Carolina Sañudo; Thomas B. Faust; Christopher A. Muryn; Robin G. Pritchard; Grigore A. Timco; Richard E. P. Winpenny; Inorganic Chemistry 48 (2009) 9811–9818; doi:10.1021/ic901418z

data_4303413
_publ_section_title
;
Proton NMR Study of Cr-Co Heterometallic Wheel Complexes
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              9811
_journal_page_last               9818
_journal_paper_doi               10.1021/ic901418z
_journal_volume                  48
_journal_year                    2009
_chemical_formula_sum            'C85 H156.5 Co Cr7 F8 N O32.25'
_chemical_formula_weight         2283.54
_chemical_name_systematic
; 
 ? 
;
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 114.405(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   45.1745(11)
_cell_length_b                   16.3766(4)
_cell_length_c                   35.1498(7)
_cell_measurement_reflns_used    38745
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.1669
_cell_measurement_theta_min      2.6638
_cell_volume                     23680.5(10)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.28cycle4 beta (release 11-11-2005 CrysAlis171 .NET)
(compiled Nov 11 2005,15:50:43)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.28cycle4 beta (release 11-11-2005 CrysAlis171 .NET)
(compiled Nov 11 2005,15:50:43)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.28cycle4 beta (release 11-11-2005 CrysAlis171 .NET)
(compiled Nov 11 2005,15:50:43)
;
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3367
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Oxford Diffraction XCalibur 2'
_diffrn_measurement_method       'phi and omega'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0653
_diffrn_reflns_av_sigmaI/netI    0.0794
_diffrn_reflns_limit_h_max       59
_diffrn_reflns_limit_h_min       -60
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       46
_diffrn_reflns_limit_l_min       -46
_diffrn_reflns_number            115634
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         2.67
_exptl_absorpt_coefficient_mu    0.832
_exptl_absorpt_correction_T_max  0.9214
_exptl_absorpt_correction_T_min  0.6811
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.5 (release 28-08-2006 CrysAlis171 .NET)
(compiled Aug 28 2006,13:05:05)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            Green
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             9588
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.516
_refine_diff_density_min         -0.783
_refine_diff_density_rms         0.109
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.171
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1265
_refine_ls_number_reflns         29349
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.171
_refine_ls_R_factor_all          0.1327
_refine_ls_R_factor_gt           0.0920
_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^)+(0.0353P)^2^+225.0936P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1614
_refine_ls_wR_factor_ref         0.1753
_reflns_number_gt                20883
_reflns_number_total             29349
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic901418z_si_001_3.cif
_cod_data_source_block           piperidineCr7Co-6
_cod_original_cell_volume        23680.5(9)
_cod_original_formula_sum        'C85 H156.50 Co Cr7 F8 N O32.25'
_cod_database_code               4303413