Reduction-free synthesis of stable acetylide cobalamins
Mikolaj Chrominski; Agnieszka Lewalska; Dorota Gryko; Chem.Commun. 49 (2013) 11406–; doi:10.1039/c3cc47210h

data_7110087
_publ_section_title
;
 Reduction-free synthesis of stable acetylide cobalamins
;
_journal_name_full               Chem.Commun.
_journal_page_first              11406
_journal_paper_doi               10.1039/c3cc47210h
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C79 H131 Co N13 O27 P'
_chemical_formula_weight         1784.87
_chemical_name_systematic
; 
 ? 
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.8504(3)
_cell_length_b                   21.6765(4)
_cell_length_c                   26.2587(5)
_cell_measurement_reflns_used    9926
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      67.11
_cell_measurement_theta_min      3.37
_cell_volume                     9022.0(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0433
_diffrn_reflns_av_sigmaI/netI    0.0699
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            47545
_diffrn_reflns_theta_full        66.59
_diffrn_reflns_theta_max         66.59
_diffrn_reflns_theta_min         3.26
_exptl_absorpt_coefficient_mu    2.346
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7824
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3816
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.581
_refine_diff_density_min         -0.345
_refine_diff_density_rms         0.066
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.017(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1084
_refine_ls_number_reflns         14949
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0477
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0598P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1064
_refine_ls_wR_factor_ref         0.1088
_reflns_number_gt                13305
_reflns_number_total             14949
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc47210h.txt
_cod_data_source_block           z:\aga\niemoje\dorota\al6_b\aga\bez_sq\final
_cod_database_code               7110087