Alkynylselenolatoalkylidynes (L<sub>n</sub>M[triple bond, length as m-dash]C-Se-C[triple bond, length as m-dash]CR) as building blocks for mixed metal/main-group extended frameworks.
Frogley, Benjamin J.; Genet, Tobias L.; Hill, Anthony F.; Onn, Chee S.; Dalton transactions (Cambridge, England : 2003) 48 (2019) 7632–7643; doi:10.1039/c9dt01504c

data_7049896
_publ_section_title
;
 Alkynylselenolatoalkylidynes (L<sub>n</sub>M[triple bond, length as
 m-dash]C-Se-C[triple bond, length as m-dash]CR) as building blocks for
 mixed metal/main-group extended frameworks.
;
_journal_issue                   22
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              7632
_journal_page_last               7643
_journal_paper_doi               10.1039/c9dt01504c
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C52 H54 B2 N12 O4 Se2 Si W2'
_chemical_formula_sum            'C52 H54 B2 N12 O4 Se2 Si W2'
_chemical_formula_weight         1486.40
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2019-04-02 deposited with the CCDC.    2019-04-29 downloaded from the CCDC.
;
_cell_angle_alpha                74.469(3)
_cell_angle_beta                 65.540(15)
_cell_angle_gamma                89.467(10)
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_cell_length_b                   15.247(3)
_cell_length_c                   15.864(3)
_cell_measurement_reflns_used    9836
_cell_measurement_temperature    100.4092(2)
_cell_measurement_theta_max      31.730
_cell_measurement_theta_min      1.103
_cell_volume                     3078.6(19)
_computing_cell_refinement       'XDS (Kabsch, 1993)'
_computing_data_collection       'AS QEGUI'
_computing_data_reduction        'XDS (Kabsch, 1993)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.4092(2)
_diffrn_measured_fraction_theta_full 0.915
_diffrn_measured_fraction_theta_max 0.705
_diffrn_measurement_device_type  'ADSC Quantum 210r'
_diffrn_measurement_method       'Omega Scan'
_diffrn_radiation_type           Synchrotron
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1192
_diffrn_reflns_av_unetI/netI     0.1659
_diffrn_reflns_Laue_measured_fraction_full 0.915
_diffrn_reflns_Laue_measured_fraction_max 0.705
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            31610
_diffrn_reflns_point_group_measured_fraction_full 0.915
_diffrn_reflns_point_group_measured_fraction_max 0.705
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         31.739
_diffrn_reflns_theta_min         1.396
_diffrn_source                   'MX1 Beamline Australian Synchrotron'
_exptl_absorpt_coefficient_mu    4.985
_exptl_absorpt_correction_T_max  0.4341
_exptl_absorpt_correction_T_min  0.1902
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'XDS (Kabsch, 1993)'
_exptl_crystal_colour            orange
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_exptl_crystal_description       rod
_exptl_crystal_F_000             1444
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_refine_diff_density_rms         0.151
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
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_refine_ls_number_reflns         14746
_refine_ls_number_restraints     140
_refine_ls_restrained_S_all      0.877
_refine_ls_R_factor_all          0.1564
_refine_ls_R_factor_gt           0.0623
_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^)+(0.0670P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1378
_refine_ls_wR_factor_ref         0.1757
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6193
_reflns_number_total             14746
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9dt01504c2.cif
_cod_data_source_block           Compound_14
_cod_depositor_comments
'Adding full bibliography for 7049895--7049899.cif.'
_cod_original_cell_volume        3078.6(18)
_cod_database_code               7049896
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              94849
_shelx_fab_checksum              83865