Effect of the Alkali-Metal Cation on the Bonding Mode of 2,5-Dimethylpyrrole in Divalent Samarium and Ytterbium Complexes
Ganesan, Mani; Bérubé, Christian D.; Gambarotta, Sandro; Yap, Glenn P. A.; Organometallics 21 (2002) 1707–1713; doi:10.1021/om0109915

data_4076730
_publ_section_title
;
 Effect of the Alkali-Metal Cation on the Bonding Mode of
 2,5-Dimethylpyrrole in Divalent Samarium and Ytterbium Complexes
;
_journal_issue                   8
_journal_name_full               Organometallics
_journal_page_first              1707
_journal_page_last               1713
_journal_paper_doi               10.1021/om0109915
_journal_volume                  21
_journal_year                    2002
_chemical_formula_sum            'C23.5 H36 I2 Li2 N2 O2 Yb'
_chemical_formula_weight         819.26
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                77.044(2)
_cell_angle_beta                 86.608(2)
_cell_angle_gamma                76.605(2)
_cell_formula_units_Z            2
_cell_length_a                   9.0560(9)
_cell_length_b                   11.162(1)
_cell_length_c                   15.354(2)
_cell_measurement_reflns_used    'reflections from 60 data frames'
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      1.47
_cell_volume                     1471.3(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      203(2)
_diffrn_measured_fraction_theta_full 0.876
_diffrn_measured_fraction_theta_max 0.876
_diffrn_measurement_device_type  'CCD area detector'
_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  0.0417
_diffrn_reflns_av_sigmaI/netI    0.0665
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            11552
_diffrn_reflns_theta_full        28.72
_diffrn_reflns_theta_max         28.72
_diffrn_reflns_theta_min         1.36
_diffrn_standards_decay_%        <1
_diffrn_standards_number         '50 standard frames at start and end'
_exptl_absorpt_coefficient_mu    5.296
_exptl_absorpt_correction_T_max  0.694463
_exptl_absorpt_correction_T_min  0.335699
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing,R., Acta Cryst. (1995) A51 33-38.'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.849
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             778
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         1.579
_refine_diff_density_min         -1.565
_refine_diff_density_rms         0.185
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     313
_refine_ls_number_reflns         6664
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0552
_refine_ls_R_factor_gt           0.0424
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0500P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0990
_refine_ls_wR_factor_ref         0.1040
_reflns_number_gt                5328
_reflns_number_total             6664
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om0109915.cif
_cod_data_source_block           sg325
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1471.4(3)
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C23.50 H36 I2 Li2 N2 O2 Yb'
_cod_database_code               4076730