Two separable conformers of TATP and analogues exist at room temperature.
Denekamp, C.; Gottlieb, L.; Tamiri, T.; Tsoglin, A.; Shilav, R.; Kapon, M.; Organic letters 7 (2005) 2461–2464; doi:10.1021/ol050801c

data_1506587
_publ_section_title
;
 Two separable conformers of TATP and analogues exist at room temperature.
;
_journal_issue                   12
_journal_name_full               'Organic letters'
_journal_page_first              2461
_journal_page_last               2464
_journal_paper_doi               10.1021/ol050801c
_journal_volume                  7
_journal_year                    2005
_chemical_formula_moiety         'C18 H30 O6'
_chemical_formula_sum            'C18 H30 O6'
_chemical_formula_weight         342.42
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   11.7390(2)
_cell_length_b                   9.9400(2)
_cell_length_c                   31.9930(6)
_cell_measurement_reflns_used    4455
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      1.018
_cell_volume                     3733.12(12)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Nonius (1997), KappaCCD Collect Program'
_computing_data_reduction
;
HKL Denzo and Scalepack (Otwinowski & Minor 1997)
;
_computing_molecular_graphics
;
Molecular Structure Corporation (1999). 
ORTEP. TEXRAY Structure Analysis Package. 
MSC, 3200 Research Forest Drive, The 
Woodlands,TX 77381, USA.
;
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
;
S.Mackay, C.J.Gilmore, C.Edwards, M. Tremayne, N. Stuart, K.Shankland 
"maXus": a computer program for the solution and refinement of crystal 
structures from diffraction data University of Glasgow, Scotland, UK, 
Nonius BV, Delft, The Netherlands and MacScience Co. Ltd.,
Yokohama, Japan (1998)
;
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0289
_diffrn_reflns_av_sigmaI/netI    0.0520
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            6151
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         1.27
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9787
_exptl_absorpt_correction_T_min  0.9657
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1488
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.39
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.176
_refine_diff_density_min         -0.144
_refine_diff_density_rms         0.032
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.886
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         3291
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.886
_refine_ls_R_factor_all          0.0654
_refine_ls_R_factor_gt           0.0378
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0608P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0936
_refine_ls_wR_factor_ref         0.0989
_reflns_number_gt                1982
_reflns_number_total             3291
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol050801csi20050413_034914.cif
_cod_data_source_block           hextatp
_cod_original_sg_symbol_H-M      Pbca
_cod_database_code               1506587