Syntheses and Properties of Two-Dimensional, Dicationic Nonlinear Optical Chromophores Based on Pyrazinyl Cores
Benjamin J. Coe; John Fielden; Simon P. Foxon; Madeleine Helliwell; Inge Asselberghs; Koen Clays; Kurt De Mey; Bruce S. Brunschwig; Journal of Organic Chemistry 75 (2010) 8550–8563; doi:10.1021/jo101966r

data_4025909
_publ_contact_author_address
;
School of Chemistry, University of Manchester, Oxford Road, Manchester, M13
 9PL, UK.
;
_publ_contact_author_email       b.coe@manchester.ac.uk
_publ_contact_author_name        'Benjamin J. Coe'
_publ_section_title
;
 Syntheses and Properties of Two-Dimensional, Dicationic Nonlinear Optical
 Chromophores Based on Pyrazinyl Cores
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8550
_journal_page_last               8563
_journal_paper_doi               10.1021/jo101966r
_journal_volume                  75
_journal_year                    2010
_chemical_formula_moiety         'C27 H24 N6, 2(N O3), 2.5(H2 O)'
_chemical_formula_sum            'C27 H29 N8 O8.5'
_chemical_formula_weight         601.58
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 96.79(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.223(1)
_cell_length_b                   10.223(1)
_cell_length_c                   13.931(1)
_cell_measurement_reflns_used    2769
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.8124
_cell_measurement_theta_min      2.7266
_cell_volume                     2718.5(4)
_computing_cell_refinement
; 
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_data_collection
; 
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_data_reduction
; 
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
;
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-2004 (Altomare, 1992)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3367
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Oxford Diffraction XCalibur2'
_diffrn_measurement_method       '\w scans'
_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  0.0516
_diffrn_reflns_av_sigmaI/netI    0.1059
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            8464
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.77
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.78713
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.33.31 (release 08-01-2009 CrysAlis171 .NET)
(compiled Jan  8 2009,16:24:04)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.470
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             1260
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.824
_refine_diff_density_min         -0.540
_refine_diff_density_rms         0.065
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.876
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     407
_refine_ls_number_reflns         4730
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.876
_refine_ls_R_factor_all          0.1207
_refine_ls_R_factor_gt           0.0582
_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^)+(0.0722P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1272
_refine_ls_wR_factor_ref         0.1440
_reflns_number_gt                2389
_reflns_number_total             4730
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo101966r_si_001_2.cif
_cod_data_source_block           '[1][NO3]2.2.5H2O'
_cod_original_cell_volume        2718.5(3)
_cod_original_formula_sum        'C27 H29 N8 O8.50'
_cod_database_code               4025909