Optimised synthesis of monoanionic bis(NHC)-pincer ligand precursors and their Li-complexes
Jürgens, Eva; Buys, Kai N.; Schmidt, Anna-Theresa; Furfari, Samantha K.; Cole, Marcus L.; Moser, Michael; Rominger, Frank; Kunz, Doris; New J. Chem. 40 (2016) 9160–; doi:10.1039/C6NJ01941B

data_7055770
_publ_section_title
;
 Optimised synthesis of monoanionic bis(NHC)-pincer ligand precursors and
 their Li-complexes
;
_journal_issue                   11
_journal_name_full               'New J. Chem.'
_journal_page_first              9160
_journal_paper_doi               10.1039/C6NJ01941B
_journal_volume                  40
_journal_year                    2016
_chemical_formula_sum            'C32 H43 B2 F8 N5 O0.74'
_chemical_formula_weight         683.17
_chemical_name_common            HbimcaEt2HBF4
_chemical_name_systematic
'3,6-Di-tert-butyl-1,8-bis(3-ethylimidazolium)carbazole bis(tetrafluoroborate)'
_chemical_temperature_decomposition 572
_space_group_crystal_system      orthorhombic
_space_group_IT_number           60
_space_group_name_Hall           '-P 2n 2ab'
_space_group_name_H-M_alt        'P b c n'
_symmetry_space_group_name_Hall  '-P 2n 2ab'
_symmetry_space_group_name_H-M   'P b c n'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-04-05 deposited with the CCDC.
2016-09-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.948(2)
_cell_length_b                   11.4011(19)
_cell_length_c                   43.494(7)
_cell_measurement_reflns_used    3387
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      24.88
_cell_measurement_theta_min      2.31
_cell_volume                     6916.5(19)
_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-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1033
_diffrn_reflns_av_unetI/netI     0.0514
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       45
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            39711
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        21.965
_diffrn_reflns_theta_max         21.965
_diffrn_reflns_theta_min         0.936
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.109
_exptl_absorpt_correction_T_max  0.9593
_exptl_absorpt_correction_T_min  0.8402
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.312
_exptl_crystal_description       polyhedron
_exptl_crystal_F_000             2863
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent'
_exptl_crystal_size_max          0.450
_exptl_crystal_size_mid          0.090
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.323
_refine_diff_density_min         -0.302
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     516
_refine_ls_number_reflns         4217
_refine_ls_number_restraints     466
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.1001
_refine_ls_R_factor_gt           0.0666
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0862P)^2^+6.5189P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1577
_refine_ls_wR_factor_ref         0.1797
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3026
_reflns_number_total             4217
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6nj01941b2.cif
_cod_data_source_block           mmo18
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' tag was changed to
'_chemical_temperature_decomposition' since the value had been '572
(dec.)'. The value '572 (dec.)' was changed to '572'.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 7055764--7055771.cif.
;
_cod_original_cell_volume        6917(2)
_cod_database_code               7055770
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.953
_shelx_estimated_absorpt_t_max   0.997
_shelx_res_checksum              56880
_solvent_exptl_crystal_recrystallization_method Ethanol