Controlling magnetic communication through aromatic bridges by variation in torsion angle.
Faust, Thomas B.; Tuna, Floriana; Timco, Grigore A.; Affronte, Marco; Bellini, Valerio; Wernsdorfer, Wolfgang; Winpenny, Richard E. P.; Dalton transactions (Cambridge, England : 2003) 41 (2012) 13626–13631; doi:10.1039/c2dt31292a

data_7020343
_publ_section_title
;
 Controlling magnetic communication through aromatic bridges by variation
 in torsion angle.
;
_journal_issue                   44
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              13626
_journal_page_last               13631
_journal_paper_doi               10.1039/c2dt31292a
_journal_volume                  41
_journal_year                    2012
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C174 H305 Cr14 F6 N5 Ni2 O70, 5(C H2 Cl2)'
_chemical_formula_sum            'C179 H315 Cl10 Cr14 F6 N5 Ni2 O70'
_chemical_formula_weight         4971.28
_chemical_melting_point          ?
_chemical_name_common            '[Cr7Ni(Etglu)F3Piv15]2(PyPz)'
_chemical_name_systematic
;
?
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 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                   19.751(4)
_cell_length_b                   27.554(6)
_cell_length_c                   49.470(10)
_cell_measurement_temperature    100(2)
_cell_volume                     26923(10)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.32.24 (release 21-04-2008 CrysAlis171 .NET)
(compiled Apr 21 2008,18:23:10)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.336
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Oxford Diffraction XCalibur 2'
_diffrn_measurement_method       ' phi and omega'
_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  0.0727
_diffrn_reflns_av_sigmaI/netI    0.1205
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       57
_diffrn_reflns_limit_l_min       -61
_diffrn_reflns_number            75555
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.88
_exptl_absorpt_coefficient_mu    0.847
_exptl_absorpt_correction_T_max  0.8835
_exptl_absorpt_correction_T_min  0.5508
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            purple
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             10400
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.908
_refine_diff_density_min         -0.987
_refine_diff_density_rms         0.189
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(2)
_refine_ls_extinction_coef       0.0030(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.337
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     2576
_refine_ls_number_reflns         47333
_refine_ls_number_restraints     3066
_refine_ls_restrained_S_all      1.329
_refine_ls_R_factor_all          0.1493
_refine_ls_R_factor_gt           0.1214
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3155
_refine_ls_wR_factor_ref         0.3767
_reflns_number_gt                37811
_reflns_number_total             47333
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt31292a.txt
_cod_data_source_block           p212121
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'unknown' was changed to '?' - the
value is undefined or not given.

'_exptl_absorpt_correction_type'
value 'MULTI-SCAN' changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        26923(9)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7020343