Mechanism-based design of labile precursors for chromium(I) chemistry
Eser S. Akturk; Glenn P. A. Yap; Klaus H. Theopold; Chem.Commun. 51 (2015) 15402–; doi:10.1039/C5cc05993C

data_7117919
_publ_section_title
;
 Mechanism-based design of labile precursors for chromium(I) chemistry
;
_journal_name_full               Chem.Commun.
_journal_page_first              15402
_journal_paper_doi               10.1039/C5cc05993C
_journal_volume                  51
_journal_year                    2015
_chemical_formula_sum            'C62 H108 B2 Cr2 N14 O2'
_chemical_formula_weight         1207.24
_chemical_name_systematic
; 
 ? 
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2015-04-07 deposited with the CCDC.
2015-08-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.3210(10)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.4997(7)
_cell_length_b                   26.8005(19)
_cell_length_c                   14.0071(10)
_cell_measurement_reflns_used    6733
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      22.06
_cell_measurement_theta_min      2.28
_cell_volume                     3550.8(4)
_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-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 8.33
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker AXS APEX diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0466
_diffrn_reflns_av_unetI/netI     0.0355
_diffrn_reflns_laue_measured_fraction_full 0.999
_diffrn_reflns_laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            44470
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.470
_diffrn_reflns_theta_min         2.108
_exptl_absorpt_coefficient_mu    0.354
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6881
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'APEX2 (Bruker, 2007)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.129
_exptl_crystal_description       block
_exptl_crystal_F_000             1304
_exptl_crystal_size_max          0.255
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.140
_refine_diff_density_max         0.679
_refine_diff_density_min         -0.492
_refine_diff_density_rms         0.061
_refine_ls_extinction_coef       .
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     418
_refine_ls_number_reflns         8127
_refine_ls_number_restraints     1229
_refine_ls_restrained_S_all      0.998
_refine_ls_R_factor_all          0.0862
_refine_ls_R_factor_gt           0.0637
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
; 
 w=1/[\s^2^(Fo^2^)+(0.0848P)^2^+2.7455P] 
 where P=(Fo^2^+2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1675
_refine_ls_wR_factor_ref         0.1857
_reflns_Friedel_coverage         0.000
_reflns_friedel_fraction_full    .
_reflns_friedel_fraction_max     .
_reflns_number_gt                6084
_reflns_number_total             8127
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5cc05993c2.cif
_cod_data_source_block           kla0247
_cod_database_code               7117919
_shelx_estimated_absorpt_t_min   0.915
_shelx_estimated_absorpt_t_max   0.952
_shelxl_version_number           2013-2
_shelx_res_checksum              23041