Contrasting the group 6 metal-metal bonding in sodium dichromate(ii) and sodium dimolybdate(ii) polymethyl complexes: synthetic, X-ray crystallographic and theoretical studies.
Campbell, Ross; Kennedy, Alan R.; McLellan, Ross; Robertson, Stuart D.; Sproules, Stephen; Mulvey, Robert E.; Dalton transactions (Cambridge, England : 2003) 46 (2017) 5650–5659; doi:10.1039/c6dt04644d

data_7041843
_publ_section_title
;
 Contrasting the group 6 metal-metal bonding in sodium dichromate(ii) and
 sodium dimolybdate(ii) polymethyl complexes: synthetic, X-ray
 crystallographic and theoretical studies.
;
_journal_issue                   17
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5650
_journal_page_last               5659
_journal_paper_doi               10.1039/c6dt04644d
_journal_volume                  46
_journal_year                    2017
_chemical_formula_moiety         'C32 H88 Mo2 N8 Na4'
_chemical_formula_sum            'C32 H88 Mo2 N8 Na4'
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_chemical_name_systematic
; 
 ? 
;
_chemical_properties_physical
', Air-sensitive,Moisture-sensitive,Oxygen-sensitive'
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_audit_update_record
;
2016-11-29 deposited with the CCDC.
2017-01-26 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 105.031(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
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_cell_length_c                   12.7810(3)
_cell_measurement_reflns_used    7009
_cell_measurement_temperature    123(2)
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_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.52 (release 06-11-2009 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.52 (release 06-11-2009 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.52 (release 06-11-2009 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.874
_diffrn_measurement_device_type  'Oxford Diffraction Gemini S'
_diffrn_measurement_method       'omega scans'
_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  0.0358
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_diffrn_reflns_limit_h_max       15
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_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            15939
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         29.16
_diffrn_reflns_theta_min         2.78
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
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_exptl_absorpt_coefficient_mu    0.589
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.99090
_exptl_absorpt_correction_type   multi-scan
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;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.52 (release 06-11-2009 CrysAlis171 .NET)
(compiled Nov  6 2009,16:24:50)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.207
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.272
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.851
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         5647
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.851
_refine_ls_R_factor_all          0.0495
_refine_ls_R_factor_gt           0.0275
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0161P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0438
_refine_ls_wR_factor_ref         0.0461
_reflns_number_gt                4010
_reflns_number_total             5647
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            c6dt04644d2.cif
_cod_data_source_block           srrc902
_cod_depositor_comments
'Adding full bibliography for 7041842--7041844.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7041843