O- vs. N-protonation of 1-dimethylaminonaphthalene-8-ketones: formation of a peri N–C bond or a hydrogen bond to the pi-electron density of a carbonyl group
Mercadal, Nerea; Day, Stephen P.; Jarmyn, Andrew; Pitak, Mateusz B.; Coles, Simon J.; Wilson, Claire; Rees, Gregory J.; Hanna, John V.; Wallis, John D.; CrystEngComm 16 (2014) 8363–; doi:10.1039/C4CE00981A

data_7217129
_publ_section_title
;
 O- vs. N-protonation of 1-dimethylaminonaphthalene-8-ketones: formation
 of a peri N--C bond or a hydrogen bond to the pi-electron density of a
 carbonyl group
;
_journal_issue                   36
_journal_name_full               CrystEngComm
_journal_page_first              8363
_journal_paper_doi               10.1039/C4CE00981A
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C16 H19 N O'
_chemical_formula_weight         241.32
_chemical_name_systematic
; 
1-dimethylamino-8-isopropylnaphthalene  8
;
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.37(2)
_cell_length_b                   9.34(2)
_cell_length_c                   15.72(4)
_cell_measurement_reflns_used    3424
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.6
_cell_measurement_theta_min      1.3
_cell_volume                     1376(5)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 28.5714
_diffrn_detector_type            'Rigaku Saturn724+ (2x2 bin mode)'
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device       'four-circle \k goniometer'
_diffrn_measurement_device_type  CrystalLogic
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_measurement_specimen_support 'MiTeGen MicroMesh'
_diffrn_radiation_collimation    'Confocal mirrors'
_diffrn_radiation_monochromator  'double crystal silicon'
_diffrn_radiation_wavelength     0.68890
_diffrn_reflns_av_R_equivalents  0.0556
_diffrn_reflns_av_sigmaI/netI    0.0512
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            11800
_diffrn_reflns_theta_full        26.50
_diffrn_reflns_theta_max         26.50
_diffrn_reflns_theta_min         2.46
_diffrn_source                   synchrotron
_diffrn_source_type              'DLS beamline I19'
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9971
_exptl_absorpt_correction_T_min  0.9928
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrystalClear-SM Expert 2.0 r11 (Rigaku, 2011)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.165
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'block cut from thin needle'
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.182
_refine_diff_density_min         -0.215
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.214
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     167
_refine_ls_number_reflns         1607
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.213
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0476
_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^)+(0.0788P)^2^+0.1119P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1335
_refine_ls_wR_factor_ref         0.1347
_reflns_number_gt                2863
_reflns_number_total             3086
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce00981a2.cif
_cod_data_source_block           ketone8
_cod_depositor_comments
'Adding full bibliography for 7217128--7217139.cif.'
_cod_original_sg_symbol_H-M      Pna21
_cod_database_code               7217129