Stabilization of anti-aromatic and strained five-membered rings with a transition metal
Congqing Zhu; Shunhua Li; Ming Luo; Xiaoxi Zhou; Yufen Niu; Minglian Lin; Jun Zhu; Zexing Cao; Xin Lu; Tingbin Wen; Zhaoxiong Xie; Paul v. R. Schleyer; Haiping Xia; Nature Chemistry 5 (2013) 698–703; doi:10.1038/nchem.1690

data_1552029
_publ_section_title
;
 Stabilization of anti-aromatic and strained five-membered rings with a
 transition metal
;
_journal_name_full               'Nature Chemistry'
_journal_page_first              698
_journal_page_last               703
_journal_paper_doi               10.1038/nchem.1690
_journal_volume                  5
_journal_year                    2013
_chemical_formula_moiety         'C63 H51 Cl2 O2 Os P3,C2H6Cl4O'
_chemical_formula_sum            'C65 H57 Cl6 O3 Os P3'
_chemical_formula_weight         1381.92
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 109.685(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.8326(4)
_cell_length_b                   28.3948(5)
_cell_length_c                   15.8845(4)
_cell_measurement_reflns_used    13421
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      29.0572
_cell_measurement_theta_min      2.6388
_cell_volume                     5874.4(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0339
_diffrn_reflns_av_sigmaI/netI    0.0615
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            26019
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.72
_exptl_absorpt_coefficient_mu    2.572
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.80136
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.33.46 (release 27-08-2009 CrysAlis171 .NET) 
(compiled Aug 27 2009,17:19:36) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.563
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2776
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.069
_refine_diff_density_min         -0.735
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.909
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     703
_refine_ls_number_reflns         10337
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.910
_refine_ls_R_factor_all          0.0405
_refine_ls_R_factor_gt           0.0267
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0181P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0488
_refine_ls_wR_factor_ref         0.0502
_reflns_number_gt                7944
_reflns_number_total             10337
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            nchem.1690-s2.cif
_cod_data_source_block           1
_cod_original_cell_volume        5874.4(2)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1552029