Synthesis of 2-Nickela(II)oxetanes from Nickel(0) and Epoxides: Structure, Reactivity, and a New Mechanism of Formation.
Desnoyer, Addison N.; Bowes, Eric G.; Patrick, Brian O.; Love, Jennifer A.; Journal of the American Chemical Society 137 (2015) 12748–12751; doi:10.1021/jacs.5b06735

data_4129476
_publ_section_title
;
 Synthesis of 2-Nickela(II)oxetanes from Nickel(0) and Epoxides:
 Structure, Reactivity, and a New Mechanism of Formation.
;
_journal_issue                   40
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12748
_journal_page_last               12751
_journal_paper_doi               10.1021/jacs.5b06735
_journal_volume                  137
_journal_year                    2015
_chemical_formula_moiety         'C25 H50 Ni O2 P2'
_chemical_formula_sum            'C25 H50 Ni O2 P2'
_chemical_formula_weight         503.30
_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     direct
_audit_creation_date             2014-12-02
_audit_creation_method
;
Olex2 1.2
(compiled 2014.11.28 svn.r3106 for OlexSys, GUI svn.r4959)
;
_cell_angle_alpha                90
_cell_angle_beta                 103.322(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.124(3)
_cell_length_b                   8.7411(16)
_cell_length_c                   19.627(4)
_cell_measurement_reflns_used    9993
_cell_measurement_temperature    90(2)
_cell_measurement_theta_max      30.03
_cell_measurement_theta_min      2.56
_cell_volume                     2691.8(9)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_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, 2008)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'Bruker-Nonius APEXII CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device
'Bruker-Nonius APEXII CCD area detector and D8 diffractometer'
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'TRIUMPH curved-crystal'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0441
_diffrn_reflns_av_unetI/netI     0.0425
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            29217
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         30.055
_diffrn_reflns_theta_min         2.133
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.858
_exptl_absorpt_correction_T_max  0.942
_exptl_absorpt_correction_T_min  0.863
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014/4) was used for absorption correction.
wR2(int) was 0.0532 before and 0.0439 after correction.
The Ratio of minimum to maximum transmission is 0.9166.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.242
_exptl_crystal_description       plate
_exptl_crystal_F_000             1096
_refine_diff_density_max         0.810
_refine_diff_density_min         -0.316
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         7888
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0522
_refine_ls_R_factor_gt           0.0332
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0342P)^2^+0.5938P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0703
_refine_ls_wR_factor_ref         0.0768
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6129
_reflns_number_total             7888
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja5b06735_si_002.cif
_cod_data_source_block           10
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_cell_volume        2691.7(8)
_cod_database_code               4129476
_shelxl_version_number           2014/6
_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 Ternary CH refined with riding coordinates:
 C2(H2)
2.b Secondary CH2 refined with riding coordinates:
 C4(H4A,H4B), C5(H5A,H5B), C6(H6A,H6B), C16(H16A,H16B), C17(H17A,H17B)
2.c Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C11(H11A,H11B,H11C),
 C13(H13A,H13B,H13C), C14(H14A,H14B,H14C), C15(H15A,H15B,H15C), C19(H19A,H19B,
 H19C), C20(H20A,H20B,H20C), C21(H21A,H21B,H21C), C23(H23A,H23B,H23C), C24(H24A,
 H24B,H24C), C25(H25A,H25B,H25C)
;
_shelx_res_checksum              83583
_shelx_hkl_checksum              81071
_olex2_submission_special_instructions 'No special instructions were received'