Chromium Chains as Polydentate Fluoride Ligands for Lanthanides
Andrew McRobbie; Asad R. Sarwar; Steven Yeninas; Harriott Nowell; Michael L. Baker; David Allan; Marshall Luban; Christopher A. Muryn; Robin G. Pritchard; Ruslan Prozorov; Grigore A. Timco; Floriana Tuna; George F. S. Whitehead; Richard E. P. Winpenny; Chem.Commun. 47 (2011) 6251–; doi:10.1039/c1cc11516b

data_7106479
_publ_section_title
;
 Chromium Chains as Polydentate Fluoride Ligands for Lanthanides
;
_journal_name_full               Chem.Commun.
_journal_page_first              6251
_journal_paper_doi               10.1039/c1cc11516b
_journal_volume                  47
_journal_year                    2011
_chemical_formula_sum            'C140 H261 Cr12 F18 Gd2 N3 O52'
_chemical_formula_weight         4099.02
_chemical_name_systematic
;
?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 95.757(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.7868(5)
_cell_length_b                   19.6213(6)
_cell_length_c                   41.6885(11)
_cell_measurement_reflns_used    22528
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.5325
_cell_measurement_theta_min      2.9596
_cell_volume                     11220.5(6)
_computing_cell_refinement
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
;
_computing_data_collection
;
CrysAlis CCD, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
;
_computing_data_reduction
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
;
_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 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0840
_diffrn_reflns_av_sigmaI/netI    0.1291
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       49
_diffrn_reflns_limit_l_min       -49
_diffrn_reflns_number            59560
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         3.72
_exptl_absorpt_coefficient_mu    1.212
_exptl_absorpt_correction_T_max  0.8884
_exptl_absorpt_correction_T_min  0.6427
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            Green
_exptl_crystal_density_diffrn    1.213
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             4231
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.10
_refine_diff_density_max         2.436
_refine_diff_density_min         -2.601
_refine_diff_density_rms         0.209
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.51(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1975
_refine_ls_number_reflns         29838
_refine_ls_number_restraints     5882
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.1673
_refine_ls_R_factor_gt           0.1283
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1723P)^2^+183.3548P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3273
_refine_ls_wR_factor_ref         0.3520
_reflns_number_gt                19182
_reflns_number_total             29838
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1cc11516b.txt
_cod_data_source_block           cr12gd2
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7106479