A Lanthanide-Gallium Complex Stabilized by the N-Heterocyclic Carbene Group
Polly L. Arnold; Stephen T. Liddle; Jonathan McMaster; Cameron Jones; David P. Mills; Journal of the American Chemical Society 129 (2007) 5360–5361; doi:10.1021/ja0710858

data_4109360
_publ_contact_author_address
;
School of Chemistry
University of Nottingham
University Park
Nottingham
NG7 2RD
;
_publ_contact_author_name        'Dr. Polly L. Arnold'
_publ_section_title
;
 A Lanthanide-Gallium Complex Stabilized by the N-Heterocyclic Carbene
 Group
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5360
_journal_page_last               5361
_journal_paper_doi               10.1021/ja0710858
_journal_volume                  129
_journal_year                    2007
_chemical_formula_moiety         'C52 H94 Ga N6 Nd O Si3'
_chemical_formula_sum            'C52 H94 Ga N6 Nd O Si3'
_chemical_formula_weight         1117.56
_chemical_name_systematic
; 
 ? 
;
_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, Me from difmap'
_atom_sites_solution_primary     heavy
_atom_sites_solution_secondary   difmap
_audit_creation_method           'enCIFer editing of SHELXL97 CIF output'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.0875(5)
_cell_length_b                   19.1557(6)
_cell_length_c                   22.0078(7)
_cell_measurement_reflns_used    19327
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.41
_cell_measurement_theta_min      2.32
_cell_volume                     5938.9(3)
_computing_cell_refinement       'Bruker SAINT version 6.36a (Bruker, 2000)'
_computing_data_collection       'Bruker SMART version 5.625 (Bruker, 2001)'
_computing_data_reduction        'Bruker SAINT; Bruker SHELXTL (Bruker, 2001)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'enCIFer(Allen etal.,2004);PLATON(Spek,2003)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0240
_diffrn_reflns_av_sigmaI/netI    0.0371
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            37705
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.02
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.417
_exptl_absorpt_correction_T_max  0.57
_exptl_absorpt_correction_T_min  0.47
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2001)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.250
_exptl_crystal_description       block
_exptl_crystal_F_000             2356
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.41
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.911
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.000(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.009
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     600
_refine_ls_number_reflns         13558
_refine_ls_number_restraints     100
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0291
_refine_ls_R_factor_gt           0.0259
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0342P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0619
_refine_ls_wR_factor_ref         0.0632
_reflns_number_gt                12575
_reflns_number_total             13558
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ja0710858si20070214_125315.cif
_cod_data_source_block           GANDSI
_cod_database_code               4109360