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_7049898
_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         'C27 H29 B N6 O2 Se W'
_chemical_formula_sum            'C27 H29 B N6 O2 Se W'
_chemical_formula_weight         743.18
_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-2014/7
_audit_update_record
;
2019-04-02 deposited with the CCDC.    2019-04-29 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.803(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.0844(7)
_cell_length_b                   13.1954(16)
_cell_length_c                   21.8026(14)
_cell_measurement_reflns_used    2746
_cell_measurement_temperature    150.0(1)
_cell_measurement_theta_max      25.1800
_cell_measurement_theta_min      4.1030
_cell_volume                     2839.9(4)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXT-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      150.0(1)
_diffrn_detector_area_resol_mean 8.1297
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, EosS2'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0926
_diffrn_reflns_av_unetI/netI     0.1069
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            16511
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.026
_diffrn_reflns_theta_max         25.026
_diffrn_reflns_theta_min         3.450
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    5.384
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.26659
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.738
_exptl_crystal_description       needle
_exptl_crystal_F_000             1448
_exptl_crystal_size_max          0.143
_exptl_crystal_size_mid          0.064
_exptl_crystal_size_min          0.050
_refine_diff_density_max         1.461
_refine_diff_density_min         -1.132
_refine_diff_density_rms         0.179
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     350
_refine_ls_number_reflns         4994
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0958
_refine_ls_R_factor_gt           0.0604
_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^)+(0.0419P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1059
_refine_ls_wR_factor_ref         0.1190
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3552
_reflns_number_total             4994
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9dt01504c2.cif
_cod_data_source_block           Compound_7
_cod_depositor_comments
'Adding full bibliography for 7049895--7049899.cif.'
_cod_database_code               7049898
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.513
_shelx_estimated_absorpt_t_max   0.775
_shelx_res_checksum              43367