Synthesis and characterization of a spin crossover iron(II)-iron(III) mixed valence supramolecular pseudo-dimer exhibiting chiral recognition, hydrogen bonding, and pi-pi interactions.
Brewer, Cynthia T.; Brewer, Greg; Butcher, Ray J.; Carpenter, Everett E.; Schmiedekamp, Ann M.; Viragh, Carol; Dalton transactions (Cambridge, England : 2003)  (2007) 295–298; doi:10.1039/b613282k

data_7004897
_publ_section_title
;
 Synthesis and characterization of a spin crossover iron(II)-iron(III)
 mixed valence supramolecular pseudo-dimer exhibiting chiral
 recognition, hydrogen bonding, and pi-pi interactions.
;
_journal_issue                   3
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              295
_journal_page_last               298
_journal_paper_doi               10.1039/b613282k
_journal_year                    2007
_chemical_formula_sum            'C42 H58 Cl2 Fe2 N20 O8.5'
_chemical_formula_weight         1161.68
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 90.548(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.553(2)
_cell_length_b                   12.2348(14)
_cell_length_c                   21.783(3)
_cell_measurement_reflns_used    5374
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27.99
_cell_measurement_theta_min      2.17
_cell_volume                     5210.8(11)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0574
_diffrn_reflns_av_sigmaI/netI    0.0807
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            37322
_diffrn_reflns_theta_full        28.17
_diffrn_reflns_theta_max         28.17
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    0.731
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.699
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            green-black
_exptl_crystal_density_diffrn    1.481
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2416
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.523
_refine_diff_density_min         -0.352
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     726
_refine_ls_number_reflns         12422
_refine_ls_number_restraints     23
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.1485
_refine_ls_R_factor_gt           0.0614
_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^)+(0.0399P)^2^+8.1148P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1162
_refine_ls_wR_factor_ref         0.1529
_reflns_number_gt                6408
_reflns_number_total             12422
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b613282k.txt
_cod_data_source_block           ctbg6rtm
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_cell_volume        5210.7(11)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_original_formula_sum        'C42 H58 Cl2 Fe2 N20 O8.50'
_cod_database_code               7004897