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_7030282
_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         'C27 H37 N2 1+, C3 H9 Cl2 Sn 1-'
_chemical_formula_sum            'C30 H46 Cl2 N2 Sn'
_chemical_formula_weight         624.28
_chemical_name_systematic
;
1,3-bis(2,6-Di-isopropylphenyl)imidazolium trimethyldichlorotin(IV)
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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             2012-07-04
_audit_creation_method           'SHELXL-97 + hand edit'
_cell_angle_alpha                90.00
_cell_angle_beta                 91.172(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.801(2)
_cell_length_b                   20.775(5)
_cell_length_c                   15.552(4)
_cell_measurement_reflns_used    5755
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.2
_cell_measurement_theta_min      2.0
_cell_volume                     3166.0(13)
_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)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'AFC12 (Right): Kappa 3 circle'
_diffrn_measurement_device_type  'Rigaku Saturn724+ (2x2 bin mode)'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support Mitegen
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0224
_diffrn_reflns_av_sigmaI/netI    0.0368
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            15650
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.13
_diffrn_source                   'Rotating Anode'
_diffrn_source_current           55.0
_diffrn_source_power             2.5
_diffrn_source_voltage           45.0
_diffrn_standards_interval_count 0
_exptl_absorpt_coefficient_mu    0.995
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.773
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'CrystalClear-SM Expert 2.0 r13 (Rigaku, 2011)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1296
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.766
_refine_diff_density_min         -0.446
_refine_diff_density_rms         0.070
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.093
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     327
_refine_ls_number_reflns         7190
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.093
_refine_ls_R_factor_all          0.0440
_refine_ls_R_factor_gt           0.0357
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0287P)^2^+1.0782P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0713
_refine_ls_wR_factor_ref         0.0751
_reflns_number_gt                6307
_reflns_number_total             7190
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c2dt31501g.txt
_cod_data_source_block           2012dcp031
_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        3166.1(13)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7030282