Preparation and structures of coordination complexes of the very hard Lewis acids ZrF4 and HfF4.
Benjamin, Sophie L.; Levason, William; Pugh, David; Reid, Gillian; Zhang, Wenjian; Dalton transactions (Cambridge, England : 2003) 41 (2012) 12548–12557; doi:10.1039/c2dt31501g

data_7030275
_publ_section_title
;
 Preparation and structures of coordination complexes of the very hard
 Lewis acids ZrF4 and HfF4.
;
_journal_issue                   40
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              12548
_journal_page_last               12557
_journal_paper_doi               10.1039/c2dt31501g
_journal_volume                  41
_journal_year                    2012
_chemical_formula_moiety         'C36 H30 As2 F4 O2 Zr, 2(C H2 Cl2)'
_chemical_formula_structural     '((C18 H15 As O)2 (F4 Zr)) (C H2 Cl2)2'
_chemical_formula_sum            'C38 H34 As2 Cl4 F4 O2 Zr'
_chemical_formula_weight         981.51
_chemical_name_systematic
;
trans-tetrafluoro-bis(triphenylarsine oxide)-zirconium(IV)
dichloromethane solvate
;
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2012-02-06
_audit_creation_method           'SHELXL-97 hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 94.348(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.898(3)
_cell_length_b                   14.688(4)
_cell_length_c                   14.840(5)
_cell_measurement_reflns_used    7000
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.1
_cell_volume                     1933.9(11)
_computing_cell_refinement
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_data_collection
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_data_reduction
'CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 28.5714
_diffrn_detector_type            'Rigaku HG Saturn724+ (2x2 bin mode)'
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'Four-circle \k diffractometer'
_diffrn_measurement_device_type  'Rigaku AFC12 '
_diffrn_measurement_method       'Profile data from \w-scans'
_diffrn_radiation_collimation    'Confocal mirrors, VHF VariMax '
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0391
_diffrn_reflns_av_sigmaI/netI    0.0571
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9087
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.08
_diffrn_source                   'Rotating anode X-ray tube'
_diffrn_source_type              'Rigaku FR-E+ Superbright'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.312
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.680
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Jacobson, R. (1998). REQAB. Private communication to the
Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.686
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.748
_refine_diff_density_min         -0.991
_refine_diff_density_rms         0.153
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.107
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         4383
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.107
_refine_ls_R_factor_all          0.0746
_refine_ls_R_factor_gt           0.0570
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0118P)^2^+15.6494P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1172
_refine_ls_wR_factor_ref         0.1261
_reflns_number_gt                3571
_reflns_number_total             4383
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c2dt31501g.txt
_cod_data_source_block           12slbrwl6x
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        1933.8(10)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7030275