Homoleptic Heavy Alkaline Earth and Europium Triazenides
Hyui Sul Lee; Mark Niemeyer; Inorganic Chemistry 49 (2010) 730–735; doi:10.1021/ic902055h

data_4314590
_publ_contact_author_address
;
Institut f\"ur Anorganische und Analytische Chemie
Johannes Gutenberg-Universit\"at Mainz
Duesbergweg 10-14
D-55099 Mainz
Germany
;
_publ_contact_author_email       niemeyer@uni-mainz.de
_publ_contact_author_name        'Mark Niemeyer'
_publ_section_title
;
 Homoleptic Heavy Alkaline Earth and Europium Triazenides
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              730
_journal_page_last               735
_journal_paper_doi               10.1021/ic902055h
_journal_volume                  49
_journal_year                    2010
_chemical_formula_sum            'C99 H113 N6 Sr'
_chemical_formula_weight         1474.57
_chemical_name_systematic
;
 Bis((1-(2',4',6'-triisopropylbiphenyl-2))
(3-(2,4,6,2'',4'',6''-hexamethyl-1,1':3';1''-terphenyl-2'))
(triazenido-N,N'))strontium
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 95.356(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.450(4)
_cell_length_b                   23.779(4)
_cell_length_c                   24.628(5)
_cell_measurement_reflns_used    52
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      12.1
_cell_measurement_theta_min      7.5
_cell_volume                     8425(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Siemens P4'
_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  0.032
_diffrn_reflns_av_sigmaI/netI    0.1598
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            15903
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.22
_diffrn_standards_decay_%        0.2
_diffrn_standards_interval_count 298
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.690
_exptl_absorpt_correction_T_max  0.733
_exptl_absorpt_correction_T_min  0.621
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3148
_exptl_crystal_size_max          0.75
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.45
_refine_diff_density_max         0.468
_refine_diff_density_min         -0.623
_refine_diff_density_rms         0.067
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.838
_refine_ls_hydrogen_treatment    refU
_refine_ls_matrix_type           full
_refine_ls_number_parameters     979
_refine_ls_number_reflns         14832
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.838
_refine_ls_R_factor_all          0.1181
_refine_ls_R_factor_gt           0.0545
_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^)+(0.0483P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1113
_refine_ls_wR_factor_ref         0.1268
_reflns_number_gt                7812
_reflns_number_total             14832
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic902055h_si_001_1.cif
_cod_data_source_block           2
_cod_database_code               4314590