Mono- and dinuclear Ni(i) products formed upon bromide abstraction from the Ni(i) ring-expanded NHC complex [Ni(6-Mes)(PPh<sub>3</sub>)Br].
Blackaby, William J. M.; Sabater, Sara; Poulten, Rebecca C.; Page, Michael J.; Folli, Andrea; Krewald, Vera; Mahon, Mary F.; Murphy, Damien M.; Richards, Emma; Whittlesey, Michael K.; Dalton transactions (Cambridge, England : 2003) 47 (2018) 769–782; doi:10.1039/c7dt04187j

data_7044958
_publ_section_title
;
 Mono- and dinuclear Ni(i) products formed upon bromide abstraction from
 the Ni(i) ring-expanded NHC complex [Ni(6-Mes)(PPh<sub>3</sub>)Br].
;
_journal_issue                   3
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              769
_journal_page_last               782
_journal_paper_doi               10.1039/c7dt04187j
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C44 H64 B2 N4 Ni2'
_chemical_formula_sum            'C44 H64 B2 N4 Ni2'
_chemical_formula_weight         788.03
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2017-10-03
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2017-10-07 deposited with the CCDC.
2017-12-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 91.0848(8)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.17049(12)
_cell_length_b                   20.24524(15)
_cell_length_c                   14.83697(15)
_cell_measurement_reflns_used    28436
_cell_measurement_temperature    100.00(11)
_cell_measurement_theta_max      71.8970
_cell_measurement_theta_min      4.7860
_cell_volume                     4255.74(6)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
;
_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    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.00(10)
_diffrn_detector_area_resol_mean 8.1150
_diffrn_detector_type            EosS2
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, EosS2'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0847
_diffrn_reflns_av_unetI/netI     0.0450
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            59289
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         72.013
_diffrn_reflns_theta_min         7.885
_exptl_absorpt_coefficient_mu    1.343
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.70374
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35 (release 13-08-2014 CrysAlis171 .NET)
(compiled Aug 13 2014,18:06:01)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'dark green'
_exptl_crystal_density_diffrn    1.230
_exptl_crystal_description       tabloid
_exptl_crystal_F_000             1688
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.680
_refine_diff_density_min         -0.638
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     511
_refine_ls_number_reflns         8330
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0580
_refine_ls_R_factor_gt           0.0528
_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^)+(0.1008P)^2^+2.1396P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1401
_refine_ls_wR_factor_ref         0.1457
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7407
_reflns_number_total             8330
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt04187j2.cif
_cod_data_source_block           s15mkw29
_cod_depositor_comments
'Adding full bibliography for 7044955--7044965.cif.'
_cod_database_code               7044958
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.730
_shelx_estimated_absorpt_t_min   0.730
_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
 At 1.5 times of:
  All C(H,H,H) groups
2. Uiso/Uaniso restraints and constraints
: with sigma of 0.1 and sigma for terminal atoms of 0.2
3. Others
 Uiso(H1A)=Uiso(H1B)=Uiso(H1C)=Uiso(H1D)=Uiso(H2C)=Uiso(H2D)=Uiso(H2E)=
 Uiso(H2F)=FVAR(1)
 Fixed Sof: H24A(0.87) H24B(0.87) H24C(0.13) H24D(0.13) H26A(0.87) H26B(0.87)
 H26C(0.13) H26D(0.13) C25A(0.87) H25A(0.87) H25B(0.87) C25B(0.13) H25C(0.13)
 H25D(0.13)
4.a Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C3(H3A,H3B), C4(H4A,H4B), C24(H24A,H24B), C24(H24C,H24D),
 C26(H26A,H26B), C26(H26C,H26D), C25A(H25A,H25B), C25B(H25C,H25D)
4.b Aromatic/amide H refined with riding coordinates:
 C7(H7), C9(H9), C16(H16), C18(H18), C29(H29), C31(H31), C38(H38), C40(H40)
4.c Idealised Me refined as rotating group:
 C11(H11A,H11B,H11C), C12(H12A,H12B,H12C), C13(H13A,H13B,H13C), C20(H20A,H20B,
 H20C), C21(H21A,H21B,H21C), C22(H22A,H22B,H22C), C33(H33A,H33B,H33C), C34(H34A,
 H34B,H34C), C35(H35A,H35B,H35C), C42(H42A,H42B,H42C), C43(H43A,H43B,H43C),
 C44(H44A,H44B,H44C)
;
_olex2_submission_special_instructions 'No special instructions were received'