Fast Carbon Dioxide Fixation by 2,6-Pyridinedicarboxamidato-nickel(II)-hydroxide Complexes: Influence of Changes in Reactive Site Environment on Reaction Rates
Deguang Huang; Olga V. Makhlynets; Lay Ling Tan; Sonny C. Lee; Elena V. Rybak-Akimova; R. H. Holm; Inorganic Chemistry 50 (2011) 10070–10081; doi:10.1021/ic200942u

data_4326480
_publ_section_title
;
 Fast Carbon Dioxide Fixation by
 2,6-Pyridinedicarboxamidato-nickel(II)-hydroxide Complexes: Influence of
 Changes in Reactive Site Environment on Reaction Rates
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              10070
_journal_page_last               10081
_journal_paper_doi               10.1021/ic200942u
_journal_volume                  50
_journal_year                    2011
_chemical_formula_moiety         'C35 H46 N3 Ni O3, C4 H12 N, C4 H10 O'
_chemical_formula_sum            'C43 H68 N4 Ni O4'
_chemical_formula_weight         763.72
_chemical_name_common            '[Ni(pyN2iBu)(OH)] (Et4N) Et2O'
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method
;
SHELXL-97

Numerous attempts were tried to make a good quality crystal for X-ray
diffraction and this is the best data we can obtain at 110K even large red
block crystals were always deposited during recrystalizations. Probably the
four flexible isobutyl arms on the ligand increase the chance to form
disordered structure in this crystal.

The main structure and the Me4N+ cation of this structure look OK with only
three carbon atoms on one of isobutyl arms disordered in two postions (50/50).
but the solvate ether molecule is not. It shows very strong disorder in the
crystal and finally this ether solvate molecule was treated as disordered
with two equally occupied positions and atoms were described isotropically.
Correspondingly, hydrogen atoms of this ether molecule were not added owing
to disordered carbon atoms.

The temperature factors of all atoms in this model were evened out by using
commands DELU & SIMU and the final refinement of this model gave an accepted 
result checked by CIFcheck program.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.7551(6)
_cell_length_b                   16.2340(6)
_cell_length_c                   17.6627(7)
_cell_measurement_reflns_used    10717
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      22.73
_cell_measurement_theta_min      2.31
_cell_volume                     4517.6(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0365
_diffrn_reflns_av_sigmaI/netI    0.0384
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            38336
_diffrn_reflns_theta_full        25.71
_diffrn_reflns_theta_max         25.71
_diffrn_reflns_theta_min         1.70
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.471
_exptl_absorpt_correction_T_max  0.8914
_exptl_absorpt_correction_T_min  0.8526
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.123
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prism
_exptl_crystal_F_000             1656
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.817
_refine_diff_density_min         -0.452
_refine_diff_density_rms         0.089
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     493
_refine_ls_number_reflns         8565
_refine_ls_number_restraints     509
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.0837
_refine_ls_R_factor_gt           0.0688
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1402P)^2^+2.2759P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1922
_refine_ls_wR_factor_ref         0.2083
_reflns_number_gt                7188
_reflns_number_total             8565
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic200942u_si_001_3.cif
_cod_data_source_block           Compound4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_database_code               4326480