AVNb3Cl11 (A = K, Rb, Cs, Tl): A Series of Layered Vanadium Niobium Halides Based on Triangular Nb3 Clusters
Thirumalai Duraisamy; Abdessadek Lachgar; Inorganic Chemistry 42 (2003) 7747–7751; doi:10.1021/ic0341439

data_4312574
_publ_contact_author_address
;
    Department of Chemistry, 
    Wake Forest University, 
    Winston-Salem, NC 27109
;
_publ_contact_author_email       lachgar@wfu.edu
_publ_contact_author_fax         '(336) 758-4656'
_publ_contact_author_name        'Abdessadek Lachgar'
_publ_contact_author_phone       '(336) 758-4676'
_publ_section_title
;
 AVNb3Cl11 (A = K, Rb, Cs, Tl): A Series of Layered Vanadium Niobium
 Halides Based on Triangular Nb3 Clusters
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7747
_journal_page_last               7751
_journal_paper_doi               10.1021/ic0341439
_journal_volume                  42
_journal_year                    2003
_chemical_formula_sum            'Cl11 Nb3 Tl V'
_chemical_formula_weight         923.99
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_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                   12.698(5)
_cell_length_b                   6.798(3)
_cell_length_c                   17.145(10)
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      1.39
_cell_volume                     1480.0(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      228(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_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  0.1097
_diffrn_reflns_av_sigmaI/netI    0.0581
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            13085
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    15.662
_exptl_absorpt_correction_T_max  0.58346
_exptl_absorpt_correction_T_min  0.32631
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    4.147
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1656
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         2.700
_refine_diff_density_min         -2.612
_refine_diff_density_rms         0.475
_refine_ls_extinction_coef       0.00008(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.005
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     86
_refine_ls_number_reflns         1619
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.005
_refine_ls_R_factor_all          0.0764
_refine_ls_R_factor_gt           0.0540
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.013
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0649P)^2^+136.6035P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1267
_refine_ls_wR_factor_ref         0.1781
_reflns_number_gt                1554
_reflns_number_total             1619
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0341439si20030211_121350_2.cif
_cod_data_source_block           Tl2V
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to the built-in table from CIF Core
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        1480.0(13)
_cod_database_code               4312574