Enhancing the Magnetic Anisotropy of Cyano-Ligated Chromium(II) and Chromium(III) Complexes via Heavy Halide Ligand Effects
Hemamala I. Karunadasa; Kristine D. Arquero; Louise A. Berben; Jeffrey R. Long; Inorganic Chemistry 49 (2010) 4738–4740; doi:10.1021/ic1002995

data_4315632
_publ_contact_author
;
        Jeffrey R. Long
        Department of Chemistry
        University of California, Berkeley
        United States of America
;
_publ_contact_author_email       jrlong@berkeley.edu
_publ_contact_author_fax         '510 642-8369'
_publ_contact_author_phone       '510 642-0860'
_publ_section_title
;
 Enhancing the Magnetic Anisotropy of Cyano-Ligated Chromium(II) and
 Chromium(III) Complexes via Heavy Halide Ligand Effects
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4738
_journal_page_last               4740
_journal_paper_doi               10.1021/ic1002995
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C13 H36 Br3 Cr O P4'
_chemical_formula_weight         624.03
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           72
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-I 2 2c'
_symmetry_space_group_name_H-M   'I b a m'
_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                   9.148(7)
_cell_length_b                   13.323(11)
_cell_length_c                   21.42(2)
_cell_measurement_reflns_used    3296
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      50.698
_cell_measurement_theta_min      6.605
_cell_volume                     2611(4)
_computing_cell_refinement       'Bruker SAINT v6.36'
_computing_data_collection       'Bruker SMART v5.054d'
_computing_data_reduction        'Bruker SAINT v6.36'
_computing_molecular_graphics    'SHELXS-97 (Sheldrick, 1990)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      103(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       \w/2\q-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  0.0230
_diffrn_reflns_av_sigmaI/netI    0.0175
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            5841
_diffrn_reflns_theta_full        25.35
_diffrn_reflns_theta_max         25.35
_diffrn_reflns_theta_min         3.30
_exptl_absorpt_coefficient_mu    5.275
_exptl_absorpt_correction_T_max  0.2590
_exptl_absorpt_correction_T_min  0.1638
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Blessing, 1995'
_exptl_crystal_colour            green
_exptl_crystal_density_diffrn    1.588
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallopiped
_exptl_crystal_F_000             1244
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.45
_exptl_crystal_size_min          0.15
_platon_squeeze_details
;
;
_refine_diff_density_max         0.356
_refine_diff_density_min         -0.504
_refine_diff_density_rms         0.096
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.136
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     49
_refine_ls_number_reflns         1225
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.136
_refine_ls_R_factor_all          0.0277
_refine_ls_R_factor_gt           0.0236
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0390P)^2^+3.3672P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0732
_refine_ls_wR_factor_ref         0.0755
_reflns_number_gt                1013
_reflns_number_total             1225
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic1002995_si_002_4.cif
_cod_data_source_block           hk112
_cod_original_cell_volume        2610(4)
_cod_database_code               4315632