Technetium fluoride trioxide, TcO3F, preparation and properties.
Supeł, Joanna; Abram, Ulrich; Hagenbach, Adelheid; Seppelt, Konrad; Inorganic chemistry 46 (2007) 5591–5595; doi:10.1021/ic070333y

data_4339750
_publ_section_title
;
 Technetium fluoride trioxide, TcO3F, preparation and properties.
;
_journal_issue                   14
_journal_name_full               'Inorganic chemistry'
_journal_page_first              5591
_journal_page_last               5595
_journal_paper_doi               10.1021/ic070333y
_journal_volume                  46
_journal_year                    2007
_chemical_formula_moiety         CrO2F2
_chemical_formula_sum            'Cr F2 O2'
_chemical_formula_weight         122.00
_chemical_name_common            Chrom-difluoride-dioxide
_chemical_name_systematic
; 
 Chrom-difluoride-dioxide 
;
_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                 92.95(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   5.655(3)
_cell_length_b                   4.8531(17)
_cell_length_c                   9.116(3)
_cell_measurement_temperature    153(2)
_cell_volume                     249.85(18)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      20
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  `Bruker-SMART-CCD-Diffractometer`
_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  0.0196
_diffrn_reflns_av_sigmaI/netI    0.0183
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7932
_diffrn_reflns_theta_full        40.92
_diffrn_reflns_theta_max         40.92
_diffrn_reflns_theta_min         3.61
_exptl_absorpt_coefficient_mu    4.399
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5900
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    3.243
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       orthorhombic
_exptl_crystal_F_000             232
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.1
_refine_diff_density_max         1.064
_refine_diff_density_min         -0.697
_refine_diff_density_rms         0.145
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.105
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     46
_refine_ls_number_reflns         1612
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.105
_refine_ls_R_factor_all          0.0282
_refine_ls_R_factor_gt           0.0230
_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^)+(0.0352P)^2^+0.0677P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0586
_refine_ls_wR_factor_ref         0.0604
_reflns_number_gt                1427
_reflns_number_total             1612
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic070333ysi20070221_053952.cif
_cod_data_source_block           cro2f2
_cod_original_cell_volume        249.85(17)
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4339750