One pot synthesis of maleimide and hydantoin by Fe(CO)(5) catalyzed [2 + 2 + 1] co-cyclization of acetylene, isocyanate and CO.
Mathur, Pradeep; Joshi, Raj Kumar; Rai, Dhirendra Kumar; Jha, Badrinath; Mobin, Shaikh M.; Dalton transactions (Cambridge, England : 2003) 41 (2012) 5045–5054; doi:10.1039/c2dt11942k

data_7018396
_publ_section_title
;
 One pot synthesis of maleimide and hydantoin by Fe(CO)(5) catalyzed [2 +
 2 + 1] co-cyclization of acetylene, isocyanate and CO.
;
_journal_issue                   16
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              5045
_journal_page_last               5054
_journal_paper_doi               10.1039/c2dt11942k
_journal_volume                  41
_journal_year                    2012
_chemical_formula_sum            'C26 H32 Fe N2 O2'
_chemical_formula_weight         460.38
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                73.530(15)
_cell_angle_beta                 73.835(14)
_cell_angle_gamma                81.142(16)
_cell_formula_units_Z            4
_cell_length_a                   10.7811(18)
_cell_length_b                   12.910(3)
_cell_length_c                   18.481(3)
_cell_measurement_reflns_used    3191
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      32.6557
_cell_measurement_theta_min      3.2096
_cell_volume                     2361.3(8)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 15.9948
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'OXFORD DIFFRACTION XCALIBUR-S'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0330
_diffrn_reflns_av_sigmaI/netI    0.0673
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            16438
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.22
_exptl_absorpt_coefficient_mu    0.663
_exptl_absorpt_correction_T_max  0.8361
_exptl_absorpt_correction_T_min  0.8060
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.7 (release 18-10-2006 CrysAlis171 .NET)
(compiled Oct 18 2006,16:28:17)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.295
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.28
_refine_diff_density_max         0.393
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.844
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     559
_refine_ls_number_reflns         8293
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.844
_refine_ls_R_factor_all          0.0754
_refine_ls_R_factor_gt           0.0380
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0408P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0776
_refine_ls_wR_factor_ref         0.0839
_reflns_number_gt                4835
_reflns_number_total             8293
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2dt11942k.txt
_cod_data_source_block           6
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        2361.4(7)
_cod_database_code               7018396