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_4082341
_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            'C16 H15 Cr N O2'
_chemical_formula_weight         305.29
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 93.754(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.1440(4)
_cell_length_b                   8.4492(4)
_cell_length_c                   19.5487(9)
_cell_measurement_temperature    173(2)
_cell_volume                     1342.27(11)
_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 0.993
_diffrn_measured_fraction_theta_max 0.982
_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  0.0468
_diffrn_reflns_av_sigmaI/netI    0.0281
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            18461
_diffrn_reflns_theta_full        67.50
_diffrn_reflns_theta_max         68.81
_diffrn_reflns_theta_min         4.53
_exptl_absorpt_coefficient_mu    7.012
_exptl_absorpt_correction_T_max  0.8725
_exptl_absorpt_correction_T_min  0.5710
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Bruker (2000)'
_exptl_crystal_density_diffrn    1.511
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.09
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.422
_refine_diff_density_min         -0.396
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.152
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         2443
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.152
_refine_ls_R_factor_all          0.0310
_refine_ls_R_factor_gt           0.0299
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0606P)^2^+0.4174P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0847
_refine_ls_wR_factor_ref         0.0936
_reflns_number_gt                2369
_reflns_number_total             2443
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om400928k_si_002.cif
_cod_data_source_block           crpy7_c
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4082341