"Low-coordinate" 1,2-oxaphosphetanes - a new opportunity in coordination and main group chemistry.
Kyri, A. W.; Gleim, F.; García Alcaraz, A; Schnakenburg, G.; Espinosa Ferao, A.; Streubel, R.; Chemical communications (Cambridge, England) 54 (2018) 7123–7126; doi:10.1039/c8cc02963f

data_7121604
_publ_section_title
;
 &quot;Low-coordinate&quot; 1,2-oxaphosphetanes - a new opportunity in
 coordination and main group chemistry.
;
_journal_issue                   52
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              7123
_journal_page_last               7126
_journal_paper_doi               10.1039/c8cc02963f
_journal_volume                  54
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C22 H21 O P'
_chemical_formula_sum            'C22 H21 O P'
_chemical_formula_weight         332.36
_chemical_name_systematic        AKY-630
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2017-07-28
_audit_creation_method
;
Olex2 1.2
(compiled 2017.01.04 svn.r3372 for OlexSys, GUI svn.r5292)
;
_audit_update_record
;
2018-03-06 deposited with the CCDC.
2018-05-03 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 115.043(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.3304(3)
_cell_length_b                   25.6709(9)
_cell_length_c                   9.0341(3)
_cell_measurement_reflns_used    17137
_cell_measurement_temperature    123
_cell_measurement_theta_max      29.58
_cell_measurement_theta_min      2.61
_cell_volume                     1750.31(11)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XS (Sheldrick, 2008)'
_diffrn_ambient_temperature      123
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS-2T'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_collimation    '0.5 mm diameter, monocapillary'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_polarisn_norm  0
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0265
_diffrn_reflns_av_unetI/netI     0.0344
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       33
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            14129
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.999
_diffrn_reflns_theta_min         2.612
_diffrn_source
'sealed X-ray tube, 12 x 0.4 mm long-fine focus'
_diffrn_source_current           40
_diffrn_source_power             2.00
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.162
_exptl_absorpt_correction_T_max  0.9849
_exptl_absorpt_correction_T_min  0.8819
_exptl_absorpt_correction_type   integration
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_description       plate
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.294
_refine_diff_density_min         -0.216
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details
;
 Flack x determined using 3315 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.03(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.972
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     441
_refine_ls_number_reflns         8403
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.972
_refine_ls_R_factor_all          0.0373
_refine_ls_R_factor_gt           0.0314
_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^)+(0.0500P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0739
_refine_ls_wR_factor_ref         0.0757
_reflns_Friedel_coverage         0.951
_reflns_Friedel_fraction_full    0.996
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                7538
_reflns_number_total             8403
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc02963f2.cif
_cod_data_source_block           3
_cod_depositor_comments
'Adding full bibliography for 7121602--7121604.cif.'
_cod_database_code               7121604
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C2'(H2'A,H2'B)
2.b Aromatic/amide H refined with riding coordinates:
 C6(H6), C7(H7), C8(H8), C9(H9), C10(H10), C12(H12), C13(H13), C14(H14),
 C15(H15), C16(H16), C18(H18), C19(H19), C20(H20), C21(H21), C22(H22), C6'(H6'),
  C7'(H7'), C8'(H8'), C9'(H9'), C10'(H10'), C12'(H12'), C13'(H13'), C14'(H14'),
 C15'(H15'), C16'(H16'), C18'(H18'), C19'(H19'), C20'(H20'), C21'(H21'),
 C22'(H22')
2.c Idealised Me refined as rotating group:
 C3(H3A,H3B,H3C), C3'(H3'A,H3'B,H3'C)
;
_shelx_res_checksum              20360
_olex2_submission_special_instructions 'No special instructions were received'