Photochemistry of Chromium Arene Tricarbonyl Complexes with Tethered Pyridinyl and Propenyl Groups: Investigations of the Effect of Ring Size on Chelate Formation, Structure, and Linkage Isomerization
Duke, Charles B.; Letterman, Roger G.; Johnson, Jermaine O.; Barr, James W.; Hu, Songnan; Ross, Charles R.; Webster, Charles Edwin; Burkey, Theodore J.; Organometallics 33 (2014) 485–; doi:10.1021/om400928k

data_4082342
_publ_section_title
;
 Photochemistry of Chromium Arene Tricarbonyl Complexes with Tethered
 Pyridinyl and Propenyl Groups: Investigations of the Effect of Ring Size
 on Chelate Formation, Structure, and Linkage Isomerization
;
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              485
_journal_paper_doi               10.1021/om400928k
_journal_volume                  33
_journal_year                    2014
_chemical_formula_sum            'C18 H15 Cr N O3'
_chemical_formula_weight         345.31
_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                94.457(2)
_cell_angle_beta                 110.8450(10)
_cell_angle_gamma                106.6500(10)
_cell_formula_units_Z            2
_cell_length_a                   7.9515(3)
_cell_length_b                   10.2396(4)
_cell_length_c                   11.0854(4)
_cell_measurement_temperature    173(2)
_cell_volume                     791.70(5)
_computing_cell_refinement       'SMART, Bruker (2000)'
_computing_data_collection       'SMART, Bruker (2000)'
_computing_data_reduction        'XPREP, Bruker (2000)'
_computing_molecular_graphics    'Raster3D (Merritt, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXs-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_radiation_monochromator  'osmic mirrors'
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0317
_diffrn_reflns_av_sigmaI/netI    0.0216
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            16621
_diffrn_reflns_theta_full        67.50
_diffrn_reflns_theta_max         69.51
_diffrn_reflns_theta_min         4.36
_exptl_absorpt_coefficient_mu    6.066
_exptl_absorpt_correction_T_max  0.7123
_exptl_absorpt_correction_T_min  0.4839
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2000)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.449
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocky
_exptl_crystal_F_000             356
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.425
_refine_diff_density_min         -0.148
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         2857
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0290
_refine_ls_R_factor_gt           0.0272
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0506P)^2^+0.2250P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0754
_refine_ls_wR_factor_ref         0.0765
_reflns_number_gt                2712
_reflns_number_total             2857
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400928k_si_002.cif
_cod_data_source_block           crpycc5
_cod_original_cell_volume        791.69(5)
_cod_database_code               4082342