Roles of Hydrogen Bonding in Proton Transfer to κ<sup>P</sup>,κ<sup>N</sup>,κ<sup>P</sup>-N(CH<sub>2</sub>CH<sub>2</sub>P <i> <sup>i</sup> </i> Pr<sub>2</sub>)<sub>2</sub>-Ligated Nickel Pincer Complexes.
Wellala, Nadeesha P. N.; Luebking, John D.; Krause, Jeanette A.; Guan, Hairong; ACS omega 3 (2018) 4986–5001; doi:10.1021/acsomega.8b00777

data_4515987
_publ_section_title
;
 Roles of Hydrogen Bonding in Proton Transfer to
 \k<sup>P</sup>,\k<sup>N</sup>,\k<sup>P</sup>-N(CH<sub>2</sub>CH<sub>2</sub>P
 <i> <sup>i</sup> </i> Pr<sub>2</sub>)<sub>2</sub>-Ligated Nickel Pincer
 Complexes.
;
_journal_issue                   5
_journal_name_full               'ACS omega'
_journal_page_first              4986
_journal_page_last               5001
_journal_paper_doi               10.1021/acsomega.8b00777
_journal_volume                  3
_journal_year                    2018
_chemical_formula_moiety         'C17 H40 N Ni P2, Br'
_chemical_formula_sum            'C17 H40 Br N Ni P2'
_chemical_formula_weight         459.06
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 99.226(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.7823(7)
_cell_length_b                   8.7196(5)
_cell_length_c                   20.1343(10)
_cell_measurement_reflns_used    9855
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      31.02
_cell_measurement_theta_min      2.78
_cell_volume                     2215.1(2)
_computing_cell_refinement       'Bruker SAINT v8.38A'
_computing_data_collection       'Bruker APEX3 v2016.9.0'
_computing_data_reduction        'Bruker SAINT v8.38A'
_computing_molecular_graphics    'Bruker SHELXTL v6.14'
_computing_publication_material
'Bruker SHELXTL v6.14 & SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement
'Bruker SHELXTL v6.14 & SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL v6.14'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker PHOTON_II'
_diffrn_measurement_method       'combination of \w and \f-scans'
_diffrn_radiation_monochromator  'Si-<111> channel cut crystal'
_diffrn_radiation_source         synchrotron
_diffrn_radiation_type           synchrotron
_diffrn_radiation_wavelength     0.7749
_diffrn_reflns_av_R_equivalents  0.0454
_diffrn_reflns_av_unetI/netI     0.0269
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            54086
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        27.706
_diffrn_reflns_theta_max         31.058
_diffrn_reflns_theta_min         2.231
_exptl_absorpt_coefficient_mu    3.509
_exptl_absorpt_correction_T_max  0.8622
_exptl_absorpt_correction_T_min  0.774
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2016.2 (Sheldrick)'
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_description       needle
_exptl_crystal_F_000             968
_exptl_crystal_size_max          0.070
_exptl_crystal_size_mid          0.015
_exptl_crystal_size_min          0.015
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.387
_refine_diff_density_rms         0.057
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         5468
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0319
_refine_ls_R_factor_gt           0.0251
_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^)+(0.0300P)^2^+0.7813P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0605
_refine_ls_wR_factor_ref         0.0634
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4740
_reflns_number_total             5468
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ao8b00777_si_002.cif
_cod_data_source_block           '[3H]Br'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4515987
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.791
_shelx_estimated_absorpt_t_max   0.949
_shelx_res_checksum              92838
_shelx_hkl_checksum              18796