From zinco(ii) arsaketenes to silylene-stabilised zinco arsinidene complexes.
Ballestero-Martínez, Ernesto; Hadlington, Terrance J.; Szilvási, Tibor; Yao, Shenglai; Driess, Matthias; Chemical communications (Cambridge, England) 54 (2018) 6124–6127; doi:10.1039/c8cc01928b

data_7121494
_publ_section_title
;
 From zinco(ii) arsaketenes to silylene-stabilised zinco arsinidene
 complexes.
;
_journal_issue                   48
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              6124
_journal_page_last               6127
_journal_paper_doi               10.1039/c8cc01928b
_journal_volume                  54
_journal_year                    2018
_chemical_formula_moiety         'C41 H61 As N4 O Zn'
_chemical_formula_sum            'C41 H61 As N4 O Zn'
_chemical_formula_weight         766.22
_chemical_properties_physical    Air-sensitive,Moisture-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   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2018-03-07 deposited with the CCDC.
2018-04-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 104.1840(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   17.2926(2)
_cell_length_b                   11.89570(10)
_cell_length_c                   19.9787(2)
_cell_measurement_reflns_used    8441
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      73.3000
_cell_measurement_theta_min      2.6360
_cell_volume                     3984.48(7)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43c (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43c (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43c (Rigaku OD, 2015)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10.5435
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'SuperNova, Single source at offset, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0240
_diffrn_reflns_av_unetI/netI     0.0312
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            15940
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         69.973
_diffrn_reflns_theta_min         6.406
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    2.038
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.41417
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.43c (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.277
_exptl_crystal_description       plate
_exptl_crystal_F_000             1624
_exptl_crystal_size_max          0.170
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.102
_refine_diff_density_max         0.450
_refine_diff_density_min         -1.110
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.034
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     449
_refine_ls_number_reflns         7530
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.034
_refine_ls_R_factor_all          0.0468
_refine_ls_R_factor_gt           0.0407
_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^)+(0.0616P)^2^+5.1366P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1148
_refine_ls_wR_factor_ref         0.1192
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6671
_reflns_number_total             7530
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8cc01928b2.cif
_cod_data_source_block           compound_4
_cod_depositor_comments
'Adding full bibliography for 7121492--7121496.cif.'
_cod_database_code               7121494
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.723
_shelx_estimated_absorpt_t_max   0.819
_shelx_res_checksum              83690