A Less Carbocentric View of Agostic Interactions: The Complexes [Rh(η4-cod){H2A(mt)2}] (A = B, C+; mt = Methimazolyl)
Crossley, Ian R.; Hill, Anthony F.; Humphrey, Elizabeth R.; Smith, Matthew K.; Organometallics 25 (2006) 2242–; doi:10.1021/om050942i

data_4074850
_publ_section_title
;
 A Less Carbocentric View of Agostic Interactions:&#x00A0; The Complexes
 [Rh(\h4-cod){H2A(mt)2}] (A = B, C+; mt = Methimazolyl)
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2242
_journal_paper_doi               10.1021/om050942i
_journal_volume                  25
_journal_year                    2006
_chemical_formula_sum            'C16 H24 B N4 Rh S2'
_chemical_formula_weight         450.23
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000(5)
_cell_angle_beta                 106.651(5)
_cell_angle_gamma                90.000(5)
_cell_formula_units_Z            4
_cell_length_a                   14.975(5)
_cell_length_b                   8.088(5)
_cell_length_c                   16.133(5)
_cell_measurement_reflns_used    26071
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      30.03
_cell_measurement_theta_min      2.91
_cell_volume                     1872.1(14)
_computing_cell_refinement       DENZO-SMN
_computing_data_collection       'Nonius Collect'
_computing_data_reduction        'X -Seed'
_computing_molecular_graphics    'X-Seed / POV-Ray'
_computing_publication_material  'Microsoft Office 2000'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  CCD
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0446
_diffrn_reflns_av_sigmaI/netI    0.0319
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            41924
_diffrn_reflns_theta_full        30.10
_diffrn_reflns_theta_max         30.10
_diffrn_reflns_theta_min         3.00
_diffrn_standards_decay_%        0.00
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.141
_exptl_absorpt_correction_T_max  0.816
_exptl_absorpt_correction_T_min  0.678
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
Gaussian integration (Coppens, 1970)
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.597
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.702
_refine_diff_density_min         -0.858
_refine_diff_density_rms         0.084
_refine_ls_extinction_coef       0.0000(3)
_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   1.042
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         5481
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0376
_refine_ls_R_factor_gt           0.0270
_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^)+(0.0340P)^2^+0.7695P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0640
_refine_ls_wR_factor_ref         0.0683
_reflns_number_gt                4599
_reflns_number_total             5481
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om050942isi20051102_090239.cif
_cod_data_source_block           c:lizzy1
_cod_original_sg_symbol_H-M      P2(1)/a
_cod_database_code               4074850