Synthesis, X-ray, and electronic structures of a new nickel dibromide complex. Activity in the regioselective catalyzed dimerization of ethylene into 1-butene.
Mora, Guilhem; van Zutphen, Steven; Klemps, Christian; Ricard, Louis; Jean, Yves; Le Floch, Pascal; Inorganic chemistry 46 (2007) 10365–10371; doi:10.1021/ic701529a

data_4339367
_publ_section_title
;
 Synthesis, X-ray, and electronic structures of a new nickel dibromide
 complex. Activity in the regioselective catalyzed dimerization of
 ethylene into 1-butene.
;
_journal_issue                   24
_journal_name_full               'Inorganic chemistry'
_journal_page_first              10365
_journal_page_last               10371
_journal_paper_doi               10.1021/ic701529a
_journal_volume                  46
_journal_year                    2007
_chemical_formula_moiety         'C24 H26 Br2 Ni P2'
_chemical_formula_sum            'C24 H26 Br2 Ni P2'
_chemical_formula_weight         594.92
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           20
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'C 2c 2'
_symmetry_space_group_name_H-M   'C 2 2 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.3650(10)
_cell_length_b                   14.1210(10)
_cell_length_c                   32.7530(10)
_cell_measurement_reflns_used    3511
_cell_measurement_temperature    150.0(1)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      0.998
_cell_volume                     4793.9(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150.0(1)
_diffrn_measured_fraction_theta_full .989
_diffrn_measured_fraction_theta_max .989
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0244
_diffrn_reflns_av_sigmaI/netI    0.0478
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            13180
_diffrn_reflns_theta_full        30.03
_diffrn_reflns_theta_max         30.03
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    4.286
_exptl_absorpt_correction_T_max  0.6273
_exptl_absorpt_correction_T_min  0.6273
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'dark red '
_exptl_crystal_density_diffrn    1.649
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2384
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.12
_refine_diff_density_max         .386
_refine_diff_density_min         -.455
_refine_diff_density_rms         .066
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.226(6)
_refine_ls_extinction_coef       0.00032(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         6833
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0398
_refine_ls_R_factor_gt           0.0298
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0186P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0568
_refine_ls_wR_factor_ref         0.0597
_reflns_number_gt                5863
_reflns_number_total             6833
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic701529a-file003.cif
_cod_data_source_block           gm334
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      'C2221     '
_cod_database_code               4339367