Phosphasalen group IV metal complexes: synthesis, characterization and ring opening polymerization of lactide.
Normand, Adrien T.; Malacea-Kabbara, Raluca; Lapenta, Rosita; Dajnak, Aymeric; Richard, Philippe; Cattey, Hélène; Bolley, Anaëlle; Grassi, Alfonso; Milione, Stefano; Auffrant, Audrey; Dagorne, Samuel; Le Gendre, Pierre; Dalton transactions (Cambridge, England : 2003) 49 (2020) 6989–7004; doi:10.1039/d0dt00972e

data_7704348
_publ_section_title
;
 Phosphasalen group IV metal complexes: synthesis, characterization and
 ring opening polymerization of lactide.
;
_journal_issue                   21
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              6989
_journal_page_last               7004
_journal_paper_doi               10.1039/d0dt00972e
_journal_volume                  49
_journal_year                    2020
_chemical_formula_moiety         'C55 H68 N2 O2 P2'
_chemical_formula_sum            'C55 H68 N2 O2 P2'
_chemical_formula_weight         851.05
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2019-11-05
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2020-01-16 deposited with the CCDC.	2020-05-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7379(4)
_cell_length_b                   18.0542(8)
_cell_length_c                   28.0036(19)
_cell_measurement_reflns_used    6024
_cell_measurement_temperature    115
_cell_measurement_theta_max      27.18
_cell_measurement_theta_min      2.38
_cell_volume                     4923.3(4)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_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    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      115
_diffrn_detector                 'CCD Plate'
_diffrn_detector_area_resol_mean '512 x 512'
_diffrn_detector_type            APEX2
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device       '\k-geometry diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans''
_diffrn_radiation_collimation    '0.6 mm'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0319
_diffrn_reflns_av_unetI/netI     0.0562
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.992
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            22819
_diffrn_reflns_point_group_measured_fraction_full 0.987
_diffrn_reflns_point_group_measured_fraction_max 0.971
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.567
_diffrn_reflns_theta_min         2.214
_diffrn_source                   'X-ray tube'
_diffrn_source_target            Mo
_diffrn_source_type              'Siemens KFF Mo 2K-180'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_T_max  0.9705
_exptl_absorpt_correction_T_min  0.8947
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0524 before and 0.0462 after correction. The Ratio of minimum to maximum transmission is 0.9219. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.148
_exptl_crystal_description       plate
_exptl_crystal_F_000             1832
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.289
_refine_diff_density_min         -0.260
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 3746 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.06(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     573
_refine_ls_number_reflns         11079
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0499
_refine_ls_R_factor_gt           0.0395
_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^)+(0.0377P)^2^+0.2203P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0807
_refine_ls_wR_factor_ref         0.0851
_reflns_Friedel_coverage         0.766
_reflns_Friedel_fraction_full    0.978
_reflns_Friedel_fraction_max     0.945
_reflns_number_gt                9638
_reflns_number_total             11079
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0dt00972e2.cif
_cod_data_source_block           1cH2
_cod_depositor_comments
'Adding full bibliography for 7704346--7704354.cif.'
_cod_database_code               7704348
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.966
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All C(H,H,H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Sof(H3BC)=Sof(H3BD)=Sof(C2B)=Sof(H2BA)=Sof(H2BB)=Sof(H1BC)=Sof(H1BD)=1-FVAR(1)
 Sof(H3AA)=Sof(H3AB)=Sof(C2)=Sof(H2A)=Sof(H2B)=Sof(H1AA)=Sof(H1AB)=FVAR(1)
3.a Secondary CH2 refined with riding coordinates:
 C3(H3AA,H3AB), C3(H3BC,H3BD), C2(H2A,H2B), C2B(H2BA,H2BB), C1(H1AA,H1AB),
 C1(H1BC,H1BD)
3.b Aromatic/amide H refined with riding coordinates:
 C7(H7), C9(H9), C19(H19), C20(H20), C21(H21), C22(H22), C23(H23), C25(H25),
 C26(H26), C27(H27), C28(H28), C29(H29), C33(H33), C35(H35), C45(H45), C46(H46),
  C47(H47), C48(H48), C49(H49), C51(H51), C52(H52), C53(H53), C54(H54), C55(H55)
3.c Idealised Me refined as rotating group:
 C11(H11A,H11B,H11C), C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C15(H15A,H15B,
 H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C), C37(H37A,H37B,H37C), C38(H38A,
 H38B,H38C), C39(H39A,H39B,H39C), C41(H41A,H41B,H41C), C42(H42A,H42B,H42C),
 C43(H43A,H43B,H43C)
;
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a mylar loop with oil'
_olex2_submission_special_instructions 'No special instructions were received'