Soft diphosphine and diarsine complexes of niobium(v) and tantalum(v) fluorides: synthesis, properties, structures and comparisons with the corresponding chlorides.
Levason, William; Light, Mark E.; Reid, Gillian; Zhang, Wenjian; Dalton transactions (Cambridge, England : 2003) 43 (2014) 9557–9566; doi:10.1039/c4dt01029a

data_7030788
_publ_section_title
;
 Soft diphosphine and diarsine complexes of niobium(v) and tantalum(v)
 fluorides: synthesis, properties, structures and comparisons with the
 corresponding chlorides.
;
_journal_issue                   25
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              9557
_journal_page_last               9566
_journal_paper_doi               10.1039/c4dt01029a
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C18 H48 Cl6 Nb2 O2 P6'
_chemical_formula_sum            'C18 H48 Cl6 Nb2 O2 P6'
_chemical_formula_weight         880.90
_chemical_name_systematic
;
 ?
;
_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                 90.158(15)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.096(5)
_cell_length_b                   10.987(6)
_cell_length_c                   18.064(11)
_cell_measurement_reflns_used    5514
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      34.6
_cell_measurement_theta_min      2.2
_cell_volume                     1805.3(18)
_computing_cell_refinement
;
CrystalClear-SM Expert 3.1 (Rigaku, 2013)
;
_computing_data_collection
;
CrystalClear-SM Expert 3.1 (Rigaku, 2013)
;
_computing_data_reduction
;
CrystalClear-SM Expert 3.1 (Rigaku, 2013)
;
_computing_molecular_graphics
;
Images generated using CrystalMaker: a crystal and molecular 
structures program for Mac and Windows. CrystalMaker Software Ltd, 
Oxford, England (www.crystalmaker.com)
;
_computing_publication_material  'WINGX (Farrugia, 2013)'
_computing_structure_refinement  'SHELXS-97 (Sheldrick, 1990)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_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 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device       'four-circle \k diffractometer'
_diffrn_measurement_device_type  'Rigaku AFC12 (Right)'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support 'MiTeGen MicroMesh'
_diffrn_radiation_collimation    'Confocal mirrors, VHF Varimax '
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0550
_diffrn_reflns_av_sigmaI/netI    0.0912
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            8255
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.24
_diffrn_source                   'Rotating Anode'
_diffrn_source_current           55.0
_diffrn_source_power             2.475
_diffrn_source_voltage           45.0
_exptl_absorpt_coefficient_mu    1.362
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.542
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Jacobson, R.A. (1998). REQAB. Private communication to the 
 Rigaku Corporation, Tokyo, Japan. 
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.621
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             892
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.680
_refine_diff_density_min         -1.052
_refine_diff_density_rms         0.154
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         3444
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0699
_refine_ls_R_factor_gt           0.0577
_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^)+(0.0529P)^2^+7.7765P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1332
_refine_ls_wR_factor_ref         0.1442
_reflns_number_gt                2977
_reflns_number_total             3444
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c4dt01029a2.cif
_cod_data_source_block           2013rwz727
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/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 

 Adding full bibliography for 7030785--7030792.cif.
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7030788