Synthesis of Tetranuclear, Four-Coordinate Manganese Clusters with "Pinned Butterfly" Geometry Formed by Metal-Mediated N-N Bond Cleavage in Diphenylhydrazine
Clifton R. Hamilton; Regina A. Baglia; Alexander D. Gordon; Michael J. Zdilla; Journal of the American Chemical Society 133 (2011) 4208–4211; doi:10.1021/ja110536t

data_4105826
_publ_section_title
;
 Synthesis of Tetranuclear, Four-Coordinate Manganese Clusters with
 "Pinned Butterfly" Geometry Formed by Metal-Mediated N-N Bond Cleavage in
 Diphenylhydrazine
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4208
_journal_page_last               4211
_journal_paper_doi               10.1021/ja110536t
_journal_volume                  133
_journal_year                    2011
_chemical_formula_moiety         '{(Mn +2) (C6 H18 N Si2 -1)2 (C4 H8 O)2'
_chemical_formula_sum            'C20 H52 Mn N2 O2 Si4'
_chemical_formula_weight         519.94
_chemical_name_common            'manganese bis(tms-amide) bis(THF)'
_chemical_name_systematic
; 
 bis(tetrahydrofuran)bis[bis(trimethylsilylamido)]manganese(II) 
;
_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                 97.116(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.8679(19)
_cell_length_b                   12.1188(16)
_cell_length_c                   18.512(3)
_cell_measurement_reflns_used    32427
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.827
_cell_measurement_theta_min      2.234
_cell_volume                     3087.2(8)
_computing_cell_refinement       'SAINT (Bruker AXS)'
_computing_data_collection       'COSMO (Bruker AXS)'
_computing_data_reduction        'SADABS (Bruker AXS)'
_computing_molecular_graphics    'SHELXL-97, XP (Sheldrick, 2008)'
_computing_publication_material  'APEX2 (Bruker AXS)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker Kappa APEX II DUO'
_diffrn_measurement_method       'phi and 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  0.0424
_diffrn_reflns_av_sigmaI/netI    0.0398
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            27771
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.48
_exptl_absorpt_coefficient_mu    0.599
_exptl_absorpt_correction_T_max  0.8406
_exptl_absorpt_correction_T_min  0.7263
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
 29335 Corrected reflections written to file
 Estimated minimum and maximum transmission:  0.6609  0.7456
 The ratio of these values is more reliable than their absolute values!
 Additional spherical absorption correction applied with mu*r =  0.2000
 Lambda/2 correction factor = 0.0015
;
_exptl_crystal_colour            block
_exptl_crystal_density_diffrn    1.119
_exptl_crystal_description       colorless
_exptl_crystal_F_000             1132
_exptl_crystal_size_max          0.57
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.535
_refine_diff_density_min         -0.478
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         7067
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0458
_refine_ls_R_factor_gt           0.0333
_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^)+(0.0538P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0926
_refine_ls_wR_factor_ref         0.0970
_reflns_number_gt                5507
_reflns_number_total             7067
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja110536t_si_002_4.cif
_cod_data_source_block           mnbis
_cod_original_cell_volume        3087.2(7)
_cod_database_code               4105826