Potassium complexes containing bidentate pyrrole ligands: synthesis, structures, and catalytic activity for the cyclotrimerization of isocyanates.
Guo, Zhiqiang; Xu, Yuan; Wu, Xiaoqin; Wei, Xuehong; Xi, Chanjuan; Dalton transactions (Cambridge, England : 2003) 48 (2019) 8116–8121; doi:10.1039/c9dt01246j

data_7049620
_publ_section_title
;
 Potassium complexes containing bidentate pyrrole ligands: synthesis,
 structures, and catalytic activity for the cyclotrimerization of
 isocyanates.
;
_journal_issue                   23
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              8116
_journal_page_last               8121
_journal_paper_doi               10.1039/c9dt01246j
_journal_volume                  48
_journal_year                    2019
_chemical_formula_sum            'C18 H30 K2 N4'
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_space_group_crystal_system      orthorhombic
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_space_group_name_Hall           '-P 2ab 2ac'
_space_group_name_H-M_alt        'P c c n'
_symmetry_space_group_name_Hall  '-P 2ab 2ac'
_symmetry_space_group_name_H-M   'P c c n'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-08-04 deposited with the CCDC.    2019-04-08 downloaded from the CCDC.
;
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_cell_measurement_theta_min      2.91
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_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      200(2)
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_diffrn_measurement_device_type  'Bruker APEX-II CCD'
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_diffrn_radiation_type           MoK\a
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_exptl_absorpt_coefficient_mu    0.451
_exptl_crystal_colour            colorless
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_exptl_crystal_description       block
_exptl_crystal_F_000             1632
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.667
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1003P)^2^+11.8417P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_reflns_number_gt                2991
_reflns_number_total             3776
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9dt01246j2.cif
_cod_data_source_block           2
_cod_depositor_comments
'Adding full bibliography for 7049619--7049620.cif.'
_cod_original_cell_volume        4262.6(8)
_cod_database_code               7049620
_shelx_shelxl_version_number     2014/7
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_shelx_res_checksum              83295