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_4515989
_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         'C16 H37 Cl N Ni P2, Cl'
_chemical_formula_sum            'C16 H37 Cl2 N Ni P2'
_chemical_formula_weight         435.01
_space_group_crystal_system      monoclinic
_space_group_IT_number           7
_space_group_name_Hall           'P -2yc'
_space_group_name_H-M_alt        'P 1 c 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                 90.0160(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.7102(3)
_cell_length_b                   10.8084(4)
_cell_length_c                   22.8180(7)
_cell_measurement_reflns_used    9957
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      3.00
_cell_volume                     2148.16(13)
_computing_cell_refinement       'Bruker SAINT v8.38A (Bruker, 2016)'
_computing_data_collection       'Bruker APEX3 v2017.3.0 (Bruker, 2017)'
_computing_data_reduction        'Bruker SAINT v8.38A (Bruker, 2016)'
_computing_molecular_graphics    'Bruker SHELXTL v6.14'
_computing_publication_material  'Bruker SHELXTL v6.14'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL v6.14'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 Venture Photon-II'
_diffrn_measurement_method       '\w-\f scans'
_diffrn_radiation_monochromator  'multilayer mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0329
_diffrn_reflns_av_unetI/netI     0.0259
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            63496
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.307
_diffrn_reflns_theta_min         2.338
_diffrn_source                   'Incoatec Mo-microfocus 3.0'
_exptl_absorpt_coefficient_mu    1.298
_exptl_absorpt_correction_T_max  0.862
_exptl_absorpt_correction_T_min  0.797
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS 2016/2 (L.Krause, et al. J. Appl. Cryst. (2015), 48, 3-10'
_exptl_crystal_colour            yellow-orange
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_description       rod
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.095
_exptl_crystal_size_mid          0.035
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.272
_refine_diff_density_min         -0.203
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details
;
 Twinning involves inversion, so Flack parameter cannot be
determined.
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     418
_refine_ls_number_reflns         10706
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0235
_refine_ls_R_factor_gt           0.0211
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0241P)^2^+0.0740P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0471
_refine_ls_wR_factor_ref         0.0485
_reflns_Friedel_coverage         0.998
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                10207
_reflns_number_total             10706
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ao8b00777_si_002.cif
_cod_data_source_block           '[4H]Cl'
_cod_original_sg_symbol_H-M      'P c'
_cod_database_code               4515989
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.887
_shelx_estimated_absorpt_t_max   0.962
_shelx_res_checksum              5464
_shelx_hkl_checksum              84540