Reversible Alkylation at the Pyridine Nitrogen in aα,α-Diimine Pyridine Ligand System
Khorobkov, Ilia; Gambarotta, Sandro; Yap, Glenn P. A.; Budzelaar, Peter H. M.; Organometallics 21 (2002) 3088–; doi:10.1021/om020349q

data_4076959
_publ_section_title
;
 Reversible Alkylation at the Pyridine Nitrogen in a\a,\a-Diimine Pyridine
 Ligand System
;
_journal_issue                   15
_journal_name_full               Organometallics
_journal_page_first              3088
_journal_paper_doi               10.1021/om020349q
_journal_volume                  21
_journal_year                    2002
_chemical_formula_sum            'C72 H102 Li2 N6 O'
_chemical_formula_weight         1081.48
_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                78.967(4)
_cell_angle_beta                 78.807(4)
_cell_angle_gamma                74.136(4)
_cell_formula_units_Z            2
_cell_length_a                   13.100(3)
_cell_length_b                   15.117(3)
_cell_length_c                   18.277(4)
_cell_measurement_reflns_used    'reflections from 60 data frames'
_cell_measurement_temperature    203(2)
_cell_measurement_theta_max      21.0
_cell_measurement_theta_min      1.47
_cell_volume                     3378.5(13)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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 0.939
_diffrn_measured_fraction_theta_max 0.939
_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  0.0782
_diffrn_reflns_av_sigmaI/netI    0.0934
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            19879
_diffrn_reflns_theta_full        21.00
_diffrn_reflns_theta_max         21.00
_diffrn_reflns_theta_min         1.15
_diffrn_standards_decay_%        <1
_diffrn_standards_number         '50 standard frames at start and end'
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.829674
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing,R., Acta Cryst. (1995) A51 33-38.'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.063
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1180
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.360
_refine_diff_density_min         -0.342
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.074
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     730
_refine_ls_number_reflns         6831
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.074
_refine_ls_R_factor_all          0.1289
_refine_ls_R_factor_gt           0.0776
_refine_ls_shift/su_max          0.015
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0455P)^2^+4.9419P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1550
_refine_ls_wR_factor_ref         0.1786
_reflns_number_gt                4340
_reflns_number_total             6831
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om020349q.cif
_cod_data_source_block           sg2056
_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 

2025-09-12
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_formula_weight         540.74
_cod_original_formula_units_Z            4
_cod_original_cell_volume        3378.6(12)
_cod_original_sg_symbol_H-M      P-1
_cod_original_formula_sum        'C36 H51 Li N3 O0.50'
_cod_database_code               4076959