Solid state and solution studies of lithium tris(n-butyl)magnesiates stabilised by Lewis donors.
Zaragoza-Calero, Silvia; Francos, Javier; Kennedy, Alan R.; O'Hara, Charles T; Dalton transactions (Cambridge, England : 2003) 44 (2015) 7258–7267; doi:10.1039/c5dt00435g

data_7034352
_publ_section_title
;
 Solid state and solution studies of lithium tris(n-butyl)magnesiates
 stabilised by Lewis donors.
;
_journal_issue                   16
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7258
_journal_page_last               7267
_journal_paper_doi               10.1039/c5dt00435g
_journal_volume                  44
_journal_year                    2015
_chemical_formula_sum            'C19 H38 Li Mg O2'
_chemical_formula_weight         329.74
_chemical_properties_physical
'Air-sensitive, Moisture-sensitive, Oxygen-sensitive'
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-01-28 deposited with the CCDC.
2015-03-09 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 93.437(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
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_cell_length_b                   22.265(2)
_cell_length_c                   18.0116(12)
_cell_measurement_reflns_used    3607
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      27.8008
_cell_measurement_theta_min      3.0255
_cell_volume                     4221.6(6)
_computing_cell_refinement       CrysalisPro
_computing_data_collection       CrysalisPro
_computing_data_reduction        CrysalisPro
_computing_publication_material  'SHELXL-97 '
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    SHELXS
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur E'
_diffrn_measurement_method       'omega 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  0.0313
_diffrn_reflns_av_sigmaI/netI    0.0478
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            11951
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.83510
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.40 (release 27-08-2010 CrysAlis171 .NET)
(compiled Aug 27 2010,11:50:40)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.038
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1464
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: '
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.486
_refine_diff_density_min         -0.476
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         4082
_refine_ls_number_restraints     134
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.1318
_refine_ls_R_factor_gt           0.0924
_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^)+(0.1320P)^2^+7.9697P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2420
_refine_ls_wR_factor_ref         0.2721
_reflns_number_gt                2704
_reflns_number_total             4082
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c5dt00435g2.cif
_cod_data_source_block           6
_cod_depositor_comments
'Adding full bibliography for 7034348--7034352.cif.'
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7034352
_cell_oxdiff_measurement_reflns_used 3608