N,N'-fused bisphosphole: heteroaromatic molecule with two-coordinate and formally divalent phosphorus. Synthesis, electronic structure, and chemical properties.
Kornev, Alexander N.; Sushev, Vyacheslav V.; Panova, Yulia S.; Lukoyanova, Olga V.; Ketkov, Sergey Yu; Baranov, Evgenii V.; Fukin, Georgy K.; Lopatin, Mikhail A.; Budnikova, Yulia G.; Abakumov, Gleb A.; Inorganic chemistry 53 (2014) 3243–3252; doi:10.1021/ic500274h

data_4337717
_publ_section_title
;
 N,N'-fused bisphosphole: heteroaromatic molecule with two-coordinate and
 formally divalent phosphorus. Synthesis, electronic structure, and
 chemical properties.
;
_journal_issue                   6
_journal_name_full               'Inorganic chemistry'
_journal_page_first              3243
_journal_page_last               3252
_journal_paper_doi               10.1021/ic500274h
_journal_volume                  53
_journal_year                    2014
_chemical_formula_sum            'C12 H16 N2 P2'
_chemical_formula_weight         250.21
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 92.484(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.4187(7)
_cell_length_b                   8.5857(8)
_cell_length_c                   8.6384(8)
_cell_measurement_reflns_used    900
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30
_cell_measurement_theta_min      2
_cell_volume                     623.80(10)
_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, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       '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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0335
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            5160
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.42
_exptl_absorpt_coefficient_mu    0.323
_exptl_absorpt_correction_T_max  0.9623
_exptl_absorpt_correction_T_min  0.9324
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008a)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.332
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             264
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.827
_refine_diff_density_min         -0.689
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     98
_refine_ls_number_reflns         1226
_refine_ls_number_restraints     30
_refine_ls_restrained_S_all      1.070
_refine_ls_R_factor_all          0.1110
_refine_ls_R_factor_gt           0.0854
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1049P)^2^+1.1460P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2073
_refine_ls_wR_factor_ref         0.2238
_reflns_number_gt                921
_reflns_number_total             1226
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic500274h_si_002.cif
_cod_data_source_block           pnn5m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4337717