Ring-Opening Polymerization of Cyclic Phosphonates: Access to Inorganic Polymers with a P<sup>V</sup>-O Main Chain.
Arz, Marius I.; Annibale, Vincent T.; Kelly, Nicole L.; Hanna, John V.; Manners, Ian; Journal of the American Chemical Society 141 (2019) 2894–2899; doi:10.1021/jacs.8b13435

data_4128481
_publ_section_title
;
 Ring-Opening Polymerization of Cyclic Phosphonates: Access to Inorganic
 Polymers with a P<sup>V</sup>-O Main Chain.
;
_journal_issue                   7
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2894
_journal_page_last               2899
_journal_paper_doi               10.1021/jacs.8b13435
_journal_volume                  141
_journal_year                    2019
_chemical_formula_moiety         'C16 H21 N2 O2 P'
_chemical_formula_sum            'C16 H21 N2 O2 P'
_chemical_formula_weight         304.32
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-05-30
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 92.861(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.9289(6)
_cell_length_b                   14.1994(13)
_cell_length_c                   13.0373(10)
_cell_measurement_reflns_used    13887
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.640
_cell_measurement_theta_min      2.122
_cell_volume                     1466.0(2)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.01
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 8
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  apex
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0646
_diffrn_reflns_av_unetI/netI     0.0606
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13887
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.640
_diffrn_reflns_theta_min         2.122
_diffrn_source                   'sealed tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    0.194
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6036
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/5 (Bruker,2014/5) was used for absorption correction. wR2(int) was 0.0808 before and 0.0504 after correction. The Ratio of minimum to maximum transmission is 0.8095. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.379
_exptl_crystal_description       prism
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.417
_refine_diff_density_min         -0.404
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     195
_refine_ls_number_reflns         3405
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0775
_refine_ls_R_factor_gt           0.0439
_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^)+(0.0412P)^2^+0.7236P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0924
_refine_ls_wR_factor_ref         0.1044
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2415
_reflns_number_total             3405
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b13435_si_002.cif
_cod_data_source_block           2Mes
_cod_database_code               4128481
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.983
_shelx_estimated_absorpt_t_min   0.955
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C5(H5), C14(H14), C15(H15), C12(H12), C3(H3), C11(H11)
2.b Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C8(H8A,H8B,H8C), C17(H17A,H17B,H17C), C16(H16A,H16B,H16C),
 C10(H10A,H10B,H10C)
;
_shelx_res_checksum              89288
_shelx_hkl_checksum              88536
_olex2_submission_special_instructions 'No special instructions were received'