Structural diversity in a homologous series of donor free alkali metal complexes bearing a sterically demanding triazenide.
McKay, Alasdair I.; Cole, Marcus L.; Dalton transactions (Cambridge, England : 2003) 48 (2019) 2948–2952; doi:10.1039/c8dt04983a

data_7048892
_publ_section_title
;
 Structural diversity in a homologous series of donor free alkali metal
 complexes bearing a sterically demanding triazenide.
;
_journal_issue                   9
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              2948
_journal_page_last               2952
_journal_paper_doi               10.1039/c8dt04983a
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C52 H59 Li2 N3'
_chemical_formula_sum            'C52 H59 Li2 N3'
_chemical_formula_weight         739.90
_chemical_name_common            '[Li2(N3Dmp2)(n-Bu)]'
_chemical_properties_physical
Air-sensitive,Moisture-sensitive,Oxygen-sensitive
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2018-01-12
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2018-04-19 deposited with the CCDC.
2019-01-28 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 110.931(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.4916(4)
_cell_length_b                   30.8596(12)
_cell_length_c                   13.3457(5)
_cell_measurement_reflns_used    9961
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      22.67
_cell_measurement_theta_min      2.31
_cell_volume                     4420.4(3)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      150.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0688
_diffrn_reflns_av_unetI/netI     0.0547
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       39
_diffrn_reflns_limit_k_min       -39
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            65307
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         27.160
_diffrn_reflns_theta_min         2.009
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.063
_exptl_absorpt_correction_T_max  0.7455
_exptl_absorpt_correction_T_min  0.6840
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/2 (Bruker,2014/2) was used for absorption correction. wR2(int) was 0.1749 before and 0.0617 after correction. The Ratio of minimum to maximum transmission is 0.9175. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.112
_exptl_crystal_description       prism
_exptl_crystal_F_000             1592
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Hexane'
_exptl_crystal_size_max          0.17
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.343
_refine_diff_density_min         -0.209
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.021
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     577
_refine_ls_number_reflns         9767
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.021
_refine_ls_R_factor_all          0.0936
_refine_ls_R_factor_gt           0.0558
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0545P)^2^+2.2383P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1299
_refine_ls_wR_factor_ref         0.1466
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6462
_reflns_number_total             9767
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt04983a2.cif
_cod_data_source_block           data6
_cod_depositor_comments
'Adding full bibliography for 7048890--7048897.cif.'
_cod_database_code               7048892
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.990
_shelx_estimated_absorpt_t_min   0.989
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Others
 Sof(C49A)=Sof(H49C)=Sof(H49D)=Sof(C51A)=Sof(H51C)=Sof(H51D)=Sof(C50A)=
 Sof(H50C)=Sof(H50D)=Sof(C52A)=Sof(H52D)=Sof(H52E)=Sof(H52F)=1-FVAR(1)
 Sof(C49)=Sof(H49A)=Sof(H49B)=Sof(C50)=Sof(H50A)=Sof(H50B)=Sof(C52)=Sof(H52A)=
 Sof(H52B)=Sof(H52C)=Sof(C51)=Sof(H51A)=Sof(H51B)=FVAR(1)
3.a Secondary CH2 refined with riding coordinates:
 C50(H50A,H50B), C51(H51A,H51B), C51A(H51C,H51D), C50A(H50C,H50D)
3.b Aromatic/amide H refined with riding coordinates:
 C27(H27), C29(H29), C28(H28), C18(H18), C44(H44), C35(H35), C3(H3), C5(H5),
 C33(H33), C11(H11), C20(H20), C9(H9), C42(H42), C4(H4)
3.c Idealised Me refined as rotating group:
 C22(H22A,H22B,H22C), C48(H48A,H48B,H48C), C39(H39A,H39B,H39C), C24(H24A,H24B,
 H24C), C37(H37A,H37B,H37C), C15(H15A,H15B,H15C), C13(H13A,H13B,H13C), C46(H46A,
 H46B,H46C), C47(H47A,H47B,H47C), C38(H38A,H38B,H38C), C23(H23A,H23B,H23C),
 C14(H14A,H14B,H14C), C52(H52A,H52B,H52C), C52A(H52D,H52E,H52F)
;
_shelx_res_checksum              77475
_olex2_exptl_crystal_mounting_method
'MiTeGen microloop in type NVH immersion oil'
_olex2_submission_special_instructions 'No special instructions were received'