New Neptunium(V) Borates That Exhibit the Alexandrite Effect
Shuao Wang; Evgeny V. Alekseev; Wulf Depmeier; Thomas E. Albrecht-Schmitt; Inorganic Chemistry 51 (2012) 7–9; doi:10.1021/ic201682s

data_4327801
_publ_section_title
;
 New Neptunium(V) Borates That Exhibit the Alexandrite Effect
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              7
_journal_page_last               9
_journal_paper_doi               10.1021/ic201682s
_journal_volume                  51
_journal_year                    2012
_chemical_formula_moiety         KNpO2[B10O14(OH)4]
_chemical_formula_sum            'B10 K Np O20'
_chemical_formula_weight         704.20
_chemical_name_common            'Potassium neptunium(V) borate'
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_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   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.302(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.933(2)
_cell_length_b                   8.1985(17)
_cell_length_c                   21.041(4)
_cell_measurement_reflns_used    3975
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      0.97
_cell_volume                     1713.0(6)
_computing_cell_refinement       'smart saint'
_computing_data_collection       smart
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXP-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXCIF-97 (Sheldrick, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'BRUKER apex II'
_diffrn_measurement_method       '0.5 wide w/ exposures'
_diffrn_radiation_monochromator  'Quazar optics'
_diffrn_radiation_source         'Imus microfocused'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0572
_diffrn_reflns_av_sigmaI/netI    0.0460
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            19635
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         0.97
_exptl_absorpt_coefficient_mu    6.413
_exptl_absorpt_correction_T_max  0.962
_exptl_absorpt_correction_T_min  0.586
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   SHELTXPREP
_exptl_crystal_colour            'Light green/dark brown'
_exptl_crystal_density_diffrn    2.730
_exptl_crystal_density_meas      ?
_exptl_crystal_description       Tablet
_exptl_crystal_F_000             1288
_exptl_crystal_size_max          0.085
_exptl_crystal_size_mid          0.079
_exptl_crystal_size_min          0.006
_refine_diff_density_max         4.075
_refine_diff_density_min         -3.523
_refine_diff_density_rms         0.306
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.217
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         3975
_refine_ls_number_restraints     24
_refine_ls_restrained_S_all      1.220
_refine_ls_R_factor_all          0.0603
_refine_ls_R_factor_gt           0.0511
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0000P)^2^+49.5339P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1142
_refine_ls_wR_factor_ref         0.1179
_reflns_number_gt                3458
_reflns_number_total             3975
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic201682s_si_001.cif
_cod_data_source_block           KNp5BO
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'N/A' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1713.1(6)
_cod_database_code               4327801