##############################################################################
###                                                                        ###
###           Full Paper (Acta Crystallographica Section C)                ###
###                                                                        ###
##############################################################################
#                                                                            #
# This CIF contains the data in a paper accepted for publication in Acta     #
# Crystallographica Section C. It conforms to the editorial and technical    #
# requirements of Notes for Authors for Section C, and has been peer         #
# reviewed under the auspices of the IUCr Commission on Journals.            #
#                                                                            #
# Full details of the Crystallographic Information File format               #
# are given in the paper "The Crystallographic Information File (CIF):       #
# a New Standard Archive File for Crystallography" by S. R. Hall, F. H.      #
# Allen and I. D. Brown [Acta Cryst. (1991), A47, 655-685].                  #
#                                                                            #
# The current version of the core CIF dictionary is obtainable from          #
# ftp://ftp.iucr.org/pub/cif_core.dic. The current version number is 2.1.    #
#                                                                            #
# Software is freely available for graphical display of the structure(s) in  #
# this CIF.  For information consult the CIF home page http://www.iucr.org/  #
# cif/home.html                                                              #
#                                                                            #
#            Copyright International Union of Crystallography                #
#                                                                            #
##############################################################################
data_I
_audit_creation_method     SHELXL97
_chemical_name_systematic
;
L-2-Amino-3-(1H-indol-3-yl)-propionic acid formic acid solvate
;
_chemical_name_common     'L-Tryptophan formic acid solvate'
_chemical_formula_moiety     'C11 H12 N2 O2 , C H2 O2'
_chemical_formula_sum     'C12 H14 N2 O4'
_chemical_formula_iupac     'C11 H12 N2 O2 , C H2 O2'
_chemical_formula_weight     250.25
_chemical_melting_point     ?
_symmetry_cell_setting     Orthorhombic
_symmetry_space_group_name_H-M     'P 21 21 21'
_symmetry_space_group_name_Hall     'P 2ac 2ab'
loop_
    _symmetry_equiv_pos_as_xyz
    'x, y, z'
    '-x+1/2, -y, z+1/2'
    'x+1/2, -y+1/2, -z'
    '-x, y+1/2, -z+1/2'
_cell_length_a     5.3163(3)
_cell_length_b     8.1348(4)
_cell_length_c     27.259(2)
_cell_angle_alpha     90
_cell_angle_beta     90
_cell_angle_gamma     90
_cell_volume     1178.87(12)
_cell_formula_units_Z     4
_cell_measurement_reflns_used     5433
_cell_measurement_theta_min     2.11
_cell_measurement_theta_max     32.44
_cell_measurement_temperature     183(2)
_exptl_crystal_description     needle
_exptl_crystal_colour     colourless
_exptl_crystal_size_max     0.2
_exptl_crystal_size_mid     0.1
_exptl_crystal_size_min     0.1
_exptl_crystal_density_diffrn     1.410
_exptl_crystal_density_meas     'not measured'
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000     528
_exptl_absorpt_coefficient_mu     0.107
_exptl_absorpt_correction_type     'empirical'
_exptl_absorpt_process_details     '(SADABS; Blessing, 1995; Siemens, 1996)'
_exptl_absorpt_correction_T_min     0.761
_exptl_absorpt_correction_T_max     1.000
_exptl_special_details
;
A Bruker AXS low-temerature device was used.
The crystal-detector distance was 4 cm and each frame covered 0.3° in ω. The
reciprocal space was explored by a combination of three different runs with
2θ = 30°. No intensity decay was observed. SADABS (Siemens, 1996) was used to
correct for absorption.
;
_diffrn_ambient_temperature     183(2)
_diffrn_radiation_type     MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_source     'fine-focus sealed tube'
_diffrn_radiation_monochromator     graphite
_diffrn_measurement_device_type     'Bruker AXS SMART CCD area-detector'
_diffrn_measurement_method     'ω and φ'
_diffrn_detector_area_resol_mean     ?
_diffrn_reflns_number     14392
_diffrn_reflns_av_R_equivalents     0.064
_diffrn_reflns_av_sigmaI/netI     0.049
_diffrn_reflns_theta_min     2.61
_diffrn_reflns_theta_max     33.12
_diffrn_reflns_theta_full     33.12
_diffrn_measured_fraction_theta_max     0.955
_diffrn_measured_fraction_theta_full     0.955
_diffrn_reflns_limit_h_min     -8
_diffrn_reflns_limit_h_max     8
_diffrn_reflns_limit_k_min     -11
_diffrn_reflns_limit_k_max     12
_diffrn_reflns_limit_l_min     -41
_diffrn_reflns_limit_l_max     41
_diffrn_standards_number     no
_diffrn_standards_interval_count     ?
_diffrn_standards_interval_time     ?
_diffrn_standards_decay_%     none
_refine_special_details
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and
 goodness of fit S are based on F², conventional R-factors R are based
 on F, with F set to zero for negative F². The threshold expression of
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is
 not relevant to the choice of reflections for refinement.  R-factors based
 on F² are statistically about twice as large as those based on F, and R-
 factors based on ALL data will be even larger.
;
_reflns_number_total     2492
_reflns_number_gt     2104
_reflns_threshold_expression     'I>2σ(I)'
_refine_ls_structure_factor_coef     Fsqd
_refine_ls_matrix_type     full
_refine_ls_R_factor_all     0.065
_refine_ls_R_factor_gt     0.051
_refine_ls_wR_factor_gt     0.121
_refine_ls_wR_factor_ref     0.126
_refine_ls_goodness_of_fit_ref     1.062
_refine_ls_restrained_S_all     1.062
_refine_ls_number_reflns     2492
_refine_ls_number_parameters     219
_refine_ls_number_restraints     0
_refine_ls_hydrogen_treatment     refall
_refine_ls_weighting_scheme     calc
_refine_ls_weighting_details
       'calc w = 1/[σ²(Fo²)+(0.0702P)²+0.0077P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_hydrogens     difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary     difmap
_refine_ls_shift/su_max     <0.001
_refine_ls_shift/su_mean     0.000
_refine_diff_density_max     0.37
_refine_diff_density_min     -0.24
_refine_ls_extinction_method     none
_refine_ls_extinction_coef     ?
loop_
    _atom_type_symbol
    _atom_type_description
    _atom_type_scat_dispersion_real
    _atom_type_scat_dispersion_imag
    _atom_type_scat_source
    'C' 'C' 0.0033 0.0016
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'H' 'H' 0.0000 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'N' 'N' 0.0061 0.0033
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'O' 'O' 0.0106 0.0060
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
_computing_data_collection     'SMART (Siemens, 1996)'
_computing_cell_refinement     'SMART'
_computing_data_reduction     'SMART'
_computing_structure_solution     'SHELXS97 (Sheldrick, 1997)'
_computing_structure_refinement     'SHELXL97 (Sheldrick, 1997)'
_computing_molecular_graphics
    'ORTEPIII (Burnett & Johnson, 1996) and SCHAKAL99 (Keller & Pierrard, 1999)'
_computing_publication_material     'PLATON (Spek, 1990)'
loop_
    _atom_site_label
    _atom_site_fract_x
    _atom_site_fract_y
    _atom_site_fract_z
    _atom_site_U_iso_or_equiv
    _atom_site_adp_type
    _atom_site_calc_flag
    _atom_site_refinement_flags
    _atom_site_occupancy
    _atom_site_disorder_assembly
    _atom_site_disorder_group
    _atom_site_type_symbol
    N1 0.8375(4) 0.1803(3) 0.95189(6) 0.0285(4) Uani d . 1 . . N
    C2 0.7169(4) 0.0686(3) 0.92251(7) 0.0260(4) Uani d . 1 . . C
    C3 0.5132(4) 0.1397(2) 0.90033(6) 0.0206(3) Uani d . 1 . . C
    C4 0.3415(4) 0.4396(3) 0.91063(7) 0.0241(4) Uani d . 1 . . C
    C5 0.3909(4) 0.5876(3) 0.93428(7) 0.0283(4) Uani d . 1 . . C
    C6 0.6012(5) 0.6056(3) 0.96504(7) 0.0319(5) Uani d . 1 . . C
    C7 0.7655(4) 0.4768(3) 0.97318(7) 0.0288(4) Uani d . 1 . . C
    C8 0.7143(4) 0.3275(3) 0.94962(6) 0.0242(4) Uani d . 1 . . C
    C9 0.5058(4) 0.3075(3) 0.91776(6) 0.0209(4) Uani d . 1 . . C
    C10 0.3366(4) 0.0536(2) 0.86617(7) 0.0223(4) Uani d . 1 . . C
    C11 0.3690(4) 0.0946(2) 0.81137(6) 0.0198(3) Uani d . 1 . . C
    C12 0.2877(4) 0.2696(2) 0.79913(6) 0.0204(3) Uani d . 1 . . C
    O13 0.0556(3) 0.29944(19) 0.80642(5) 0.0255(3) Uani d . 1 . . O
    O14 0.4480(3) 0.36826(19) 0.78453(5) 0.0278(3) Uani d . 1 . . O
    N15 0.6339(3) 0.0692(2) 0.79503(6) 0.0221(3) Uani d . 1 . . N
    H1 0.968(6) 0.164(3) 0.9700(10) 0.035(7) Uiso d . 1 . . H
    H2 0.795(6) -0.040(4) 0.9198(11) 0.039(8) Uiso d . 1 . . H
    H4 0.208(5) 0.429(3) 0.8900(9) 0.026(6) Uiso d . 1 . . H
    H5 0.283(6) 0.682(4) 0.9283(10) 0.035(7) Uiso d . 1 . . H
    H6 0.635(5) 0.711(3) 0.9802(9) 0.029(7) Uiso d . 1 . . H
    H7 0.902(5) 0.486(3) 0.9933(9) 0.021(6) Uiso d . 1 . . H
    H11 0.273(6) 0.019(4) 0.7942(9) 0.031(7) Uiso d . 1 . . H
    H10A 0.355(5) -0.070(3) 0.8708(9) 0.026(6) Uiso d . 1 . . H
    H10B 0.167(5) 0.081(3) 0.8746(9) 0.027(6) Uiso d . 1 . . H
    H15A 0.719(5) 0.162(3) 0.8003(9) 0.026(7) Uiso d . 1 . . H
    H15B 0.713(7) -0.018(4) 0.8124(10) 0.041(8) Uiso d . 1 . . H
    H15C 0.627(5) 0.040(3) 0.7663(10) 0.027(7) Uiso d . 1 . . H
    O16 -0.2042(5) 0.7887(2) 0.84447(7) 0.0525(6) Uani d . 1 . . O
    O17 -0.0386(4) 0.5973(2) 0.79702(6) 0.0362(4) Uani d . 1 . . O
    C18 -0.1563(5) 0.6461(3) 0.83536(8) 0.0329(5) Uani d . 1 . . C
    H17 -0.018(7) 0.478(4) 0.8008(11) 0.049(10) Uiso d . 1 . . H
    H18 -0.195(6) 0.557(4) 0.8602(10) 0.037(8) Uiso d . 1 . . H
_geom_special_details
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
loop_
    _geom_bond_atom_site_label_1
    _geom_bond_atom_site_label_2
    _geom_bond_site_symmetry_2
    _geom_bond_distance
    _geom_bond_publ_flag
    N1 C8 . 1.366(3) yes
    N1 C2 . 1.371(3) yes
    N1 H1 . 0.86(3) ?
    C2 C3 . 1.368(3) yes
    C2 H2 . 0.98(3) ?
    C3 C9 . 1.446(3) yes
    C3 C10 . 1.496(3) yes
    C4 C5 . 1.390(3) ?
    C4 C9 . 1.399(3) ?
    C4 H4 . 0.91(3) ?
    C5 C6 . 1.405(3) yes
    C5 H5 . 0.97(3) ?
    C6 C7 . 1.382(3) yes
    C6 H6 . 0.97(3) ?
    C7 C8 . 1.400(3) ?
    C7 H7 . 0.91(3) ?
    C8 C9 . 1.417(3) ?
    C10 C11 . 1.540(3) yes
    C10 H10A . 1.01(3) ?
    C10 H10B . 0.96(3) ?
    C11 N15 . 1.491(3) yes
    C11 C12 . 1.524(3) yes
    C11 H11 . 0.93(3) ?
    C12 O14 . 1.237(2) yes
    C12 O13 . 1.273(2) yes
    N15 H15A . 0.89(3) ?
    N15 H15B . 0.95(3) ?
    N15 H15C . 0.82(3) ?
    O16 C18 . 1.213(3) yes
    O17 C18 . 1.281(3) yes
    O17 H17 . 0.99(4) ?
    C18 H18 . 1.01(3) ?
loop_
    _geom_contact_atom_site_label_1
    _geom_contact_atom_site_label_2
    _geom_contact_distance
    _geom_contact_site_symmetry_1
    _geom_contact_site_symmetry_2
    _geom_contact_publ_flag
    O13 O17 2.487(2) . . no
    O13 N15 2.938(2) . 1_455 no
    O13 C4 3.418(2) . . no
    O13 C18 3.137(3) . . no
    O14 C18 3.384(3) . 1_655 no
    O14 N15 2.750(2) . 4_656 no
    O14 O17 3.206(3) . . no
    O14 N15 2.641(2) . . no
    O14 C11 3.342(2) . 4_656 no
    O16 C2 3.144(3) . 1_465 no
    O16 C10 3.310(3) . 1_465 no
    O16 N15 2.786(2) . 1_465 no
    O17 C12 3.254(2) . 4_556 no
    O17 C12 3.181(3) . . no
    O17 O13 2.487(2) . . no
    O17 O14 3.206(3) . . no
    O13 H17 1.51(3) . . no
    O13 H4 2.64(2) . . no
    O13 H18 2.88(3) . . no
    O13 H15A 2.12(3) . 1_455 no
    O13 H10B 2.64(2) . . no
    O14 H15C 2.88(2) . . no
    O14 H11 2.88(3) . 4_656 no
    O14 H17 2.67(4) . . no
    O14 H15A 2.25(3) . . no
    O14 H15C 2.01(3) . 4_656 no
    O16 H2 2.48(3) . 1_465 no
    O16 H10A 2.71(3) . 1_465 no
    O16 H15B 1.85(3) . 1_465 no
    O17 H11 2.85(3) . 4_556 no
    O17 H15C 2.83(3) . 4_656 no
    N1 C7 3.314(3) . 3_557 no
    N1 C8 3.350(3) . 3_557 no
    N15 O16 2.786(2) . 1_645 no
    N15 O13 2.938(2) . 1_655 no
    N15 O14 2.750(2) . 4_646 no
    N15 O14 2.641(2) . . no
    N1 H10B 2.86(3) . 1_655 no
    C2 O16 3.144(3) . 1_645 no
    C4 C12 3.351(3) . . no
    C4 O13 3.418(2) . . no
    C4 C7 3.518(3) . 1_455 no
    C7 C4 3.518(3) . 1_655 no
    C7 N1 3.314(3) . 3_457 no
    C8 N1 3.350(3) . 3_457 no
    C9 C12 3.449(2) . . no
    C10 O16 3.310(3) . 1_645 no
    C11 O14 3.342(2) . 4_646 no
    C12 O17 3.254(2) . 4_546 no
    C12 C4 3.351(3) . . no
    C12 C9 3.449(2) . . no
    C12 O17 3.181(3) . . no
    C18 O13 3.137(3) . . no
    C18 O14 3.384(3) . 1_455 no
    C2 H7 2.88(3) . 3_457 no
    C2 H10B 2.73(3) . 1_655 no
    C2 H15B 3.08(3) . . no
    C3 H15B 2.92(3) . . no
    C3 H15A 2.94(2) . . no
    C4 H18 2.98(3) . 1_655 no
    C5 H18 3.00(3) . 1_655 no
    C6 H1 2.91(3) . 3_457 no
    C6 H18 3.08(3) . 1_655 no
    C7 H1 2.49(3) . 3_457 no
    C8 H1 2.55(3) . 3_457 no
    C9 H1 3.07(3) . 3_457 no
    C9 H18 3.02(3) . 1_655 no
    C12 H4 2.83(2) . . no
    C12 H15C 2.87(3) . 4_656 no
    C12 H17 2.35(3) . . no
    C18 H4 3.01(3) . . no
    C18 H15B 2.89(3) . 1_465 no
    H1 C6 2.91(3) . 3_557 no
    H1 C7 2.49(3) . 3_557 no
    H1 C8 2.55(3) . 3_557 no
    H1 C9 3.07(3) . 3_557 no
    H2 O16 2.48(3) . 1_645 no
    H4 O13 2.64(2) . . no
    H4 C12 2.83(2) . . no
    H4 C18 3.01(3) . . no
    H7 C2 2.88(3) . 3_557 no
    H10A O16 2.71(3) . 1_645 no
    H10B O13 2.64(2) . . no
    H10B N1 2.86(3) . 1_455 no
    H10B H2 2.53(4) . 1_455 no
    H10B C2 2.73(3) . 1_455 no
    H11 O17 2.85(3) . 4_546 no
    H11 O14 2.88(3) . 4_646 no
    H15A O13 2.12(3) . 1_655 no
    H15A O14 2.25(3) . . no
    H15A C3 2.94(2) . . no
    H15B O16 1.85(3) . 1_645 no
    H15B C2 3.08(3) . . no
    H15B C18 2.89(3) . 1_645 no
    H15B C3 2.92(3) . . no
    H15C O14 2.88(2) . . no
    H15C O17 2.83(3) . 4_646 no
    H15C C12 2.87(3) . 4_646 no
    H15C O14 2.01(3) . 4_646 no
    H17 O13 1.51(3) . . no
    H17 O14 2.67(4) . . no
    H17 C12 2.35(3) . . no
    H18 O13 2.88(3) . . no
    H18 C4 2.98(3) . 1_455 no
    H18 C5 3.00(3) . 1_455 no
    H18 C6 3.08(3) . 1_455 no
    H18 C9 3.02(3) . 1_455 no
loop_
    _geom_angle_atom_site_label_1
    _geom_angle_atom_site_label_2
    _geom_angle_atom_site_label_3
    _geom_angle_site_symmetry_1
    _geom_angle_site_symmetry_3
    _geom_angle
    _geom_angle_publ_flag
    C8 N1 C2 . . 109.31(17) yes
    C8 N1 H1 . . 123.1(19) ?
    C2 N1 H1 . . 127.6(19) ?
    C3 C2 N1 . . 110.36(19) yes
    C3 C2 H2 . . 133.1(18) ?
    N1 C2 H2 . . 116.4(18) ?
    C2 C3 C9 . . 105.98(18) ?
    C2 C3 C10 . . 125.00(19) ?
    C9 C3 C10 . . 129.00(18) ?
    C5 C4 C9 . . 118.88(19) ?
    C5 C4 H4 . . 120.9(17) ?
    C9 C4 H4 . . 120.1(17) ?
    C4 C5 C6 . . 121.1(2) ?
    C4 C5 H5 . . 119.7(18) ?
    C6 C5 H5 . . 119.1(18) ?
    C7 C6 C5 . . 121.3(2) ?
    C7 C6 H6 . . 119.2(17) ?
    C5 C6 H6 . . 119.5(17) ?
    C6 C7 C8 . . 117.4(2) ?
    C6 C7 H7 . . 122.4(16) ?
    C8 C7 H7 . . 120.1(16) ?
    N1 C8 C7 . . 130.23(19) yes
    N1 C8 C9 . . 107.57(18) yes
    C7 C8 C9 . . 122.2(2) yes
    C4 C9 C8 . . 119.01(19) ?
    C4 C9 C3 . . 134.19(18) ?
    C8 C9 C3 . . 106.77(17) ?
    C3 C10 C11 . . 115.58(16) ?
    C3 C10 H10A . . 108.9(15) ?
    C11 C10 H10A . . 108.9(14) ?
    C3 C10 H10B . . 109.4(16) ?
    C11 C10 H10B . . 106.7(15) ?
    H10A C10 H10B . . 107(2) ?
    N15 C11 C12 . . 109.39(16) yes
    N15 C11 C10 . . 111.42(15) ?
    C12 C11 C10 . . 112.53(15) ?
    N15 C11 H11 . . 105.9(19) ?
    C12 C11 H11 . . 110.9(19) ?
    C10 C11 H11 . . 106.5(17) ?
    O14 C12 O13 . . 126.46(19) yes
    O14 C12 C11 . . 118.74(17) ?
    O13 C12 C11 . . 114.78(18) ?
    C11 N15 H15A . . 108.3(18) ?
    C11 N15 H15B . . 112(2) ?
    H15A N15 H15B . . 109(2) ?
    C11 N15 H15C . . 106(2) ?
    H15A N15 H15C . . 115(2) ?
    H15B N15 H15C . . 106(3) ?
    C18 O17 H17 . . 106.0(18) ?
    O16 C18 O17 . . 124.4(2) yes
    O16 C18 H18 . . 120.4(17) ?
    O17 C18 H18 . . 114.9(17) ?
loop_
    _geom_torsion_atom_site_label_1
    _geom_torsion_atom_site_label_2
    _geom_torsion_atom_site_label_3
    _geom_torsion_atom_site_label_4
    _geom_torsion_site_symmetry_1
    _geom_torsion_site_symmetry_2
    _geom_torsion_site_symmetry_3
    _geom_torsion_site_symmetry_4
    _geom_torsion
    _geom_torsion_publ_flag
    C8 N1 C2 C3 . . . . 0.1(2) no
    N1 C2 C3 C9 . . . . -0.7(2) no
    C2 C3 C9 C8 . . . . 1.0(2) no
    C2 C3 C10 C11 . . . . -104.4(2) no
    C5 C4 C9 C3 . . . . 179.1(2) no
    C5 C6 C7 C8 . . . . 0.0(3) no
    N1 C8 C9 C3 . . . . -0.9(2) no
    C7 C8 C9 C4 . . . . -1.8(3) no
    N15 C11 C12 O13 . . . . 172.45(15) no
    C10 C11 C12 O14 . . . . 115.27(19) no
    C2 N1 C8 C7 . . . . 179.7(2) no
    N1 C2 C3 C10 . . . . -179.33(18) no
    C10 C3 C9 C4 . . . . 1.6(4) no
    C9 C3 C10 C11 . . . . 77.3(3) no
    C5 C4 C9 C8 . . . . 1.3(3) no
    C6 C7 C8 N1 . . . . -177.9(2) no
    N1 C8 C9 C4 . . . . 177.44(18) no
    C3 C10 C11 N15 . . . . 53.5(2) no
    N15 C11 C12 O14 . . . . -9.1(2) no
    C2 N1 C8 C9 . . . . 0.5(2) no
    C2 C3 C9 C4 . . . . -177.0(2) no
    C10 C3 C9 C8 . . . . 179.54(18) no
    C9 C4 C5 C6 . . . . -0.2(3) no
    C4 C5 C6 C7 . . . . -0.4(3) no
    C6 C7 C8 C9 . . . . 1.2(3) no
    C7 C8 C9 C3 . . . . 179.83(18) no
    C3 C10 C11 C12 . . . . -69.8(2) no
    C10 C11 C12 O13 . . . . -63.2(2) no
    C8 N1 C2 H2 . . . . 177(2) no
    H1 N1 C8 C7 . . . . 1(2) no
    H15A N15 C11 C12 . . . . 37.0(17) no
    H15B N15 C11 C12 . . . . 157(2) no
    H15C N15 C11 C12 . . . . -87.1(18) no
    H2 C2 C3 C10 . . . . 5(3) no
    C9 C3 C10 H10A . . . . -159.8(15) no
    H4 C4 C5 C6 . . . . -178.1(19) no
    H4 C4 C9 C8 . . . . 179.2(19) no
    H5 C5 C6 H6 . . . . 1(3) no
    H6 C6 C7 H7 . . . . 2(3) no
    C3 C10 C11 H11 . . . . 169(2) no
    H10A C10 C11 H11 . . . . 46(3) no
    H10B C10 C11 H11 . . . . -69(3) no
    H1 N1 C2 C3 . . . . 179(2) no
    H1 N1 C8 C9 . . . . -178(2) no
    H15A N15 C11 H11 . . . . 156(3) no
    H15B N15 C11 H11 . . . . -83(3) no
    H15C N15 C11 H11 . . . . 32(3) no
    C2 C3 C10 H10A . . . . 18.5(15) no
    C9 C3 C10 H10B . . . . -43.2(16) no
    H4 C4 C5 H5 . . . . -1(3) no
    C4 C5 C6 H6 . . . . 177.8(17) no
    C5 C6 C7 H7 . . . . -179.3(18) no
    H7 C7 C8 N1 . . . . 1.4(18) no
    H10A C10 C11 N15 . . . . -69.5(16) no
    H10B C10 C11 N15 . . . . 175.4(15) no
    H11 C11 C12 O13 . . . . 55.9(19) no
    H1 N1 C2 H2 . . . . -5(3) no
    H15A N15 C11 C10 . . . . -88.0(17) no
    H15B N15 C11 C10 . . . . 32(2) no
    H15C N15 C11 C10 . . . . 147.9(18) no
    H2 C2 C3 C9 . . . . -176(3) no
    C2 C3 C10 H10B . . . . 135.1(15) no
    C9 C4 C5 H5 . . . . 177(2) no
    H4 C4 C9 C3 . . . . -3.0(19) no
    H5 C5 C6 C7 . . . . -178(2) no
    H6 C6 C7 C8 . . . . -178.3(17) no
    H7 C7 C8 C9 . . . . -179.5(18) no
    H10A C10 C11 C12 . . . . 167.3(16) no
    H10B C10 C11 C12 . . . . 52.2(15) no
    H11 C11 C12 O14 . . . . -125.7(19) no
loop_
    _geom_hbond_atom_site_label_D
    _geom_hbond_atom_site_label_H
    _geom_hbond_atom_site_label_A
    _geom_hbond_site_symmetry_A
    _geom_hbond_distance_DH
    _geom_hbond_distance_HA
    _geom_hbond_distance_DA
    _geom_hbond_angle_DHA
    N15 H15A O13 1_655 0.89(3) 2.12(3) 2.938(2) 153(2)
    N15 H15A O14 . 0.89(3) 2.25(3) 2.641(2) 106(2)
    N15 H15B O16 1_645 0.95(3) 1.85(3) 2.786(2) 167(3)
    N15 H15C O14 4_646 0.82(3) 2.01(3) 2.750(2) 151(2)
    O17 H17 O13 . 0.98(3) 1.51(3) 2.487(2) 171(4)
data_global
_journal_date_recd_electronic     2002-06-18
_journal_date_accepted     2002-07-11
_journal_name_full     'Acta Crystallographica, Section C'
_journal_year     2002
_journal_volume     58
_journal_issue      9
_journal_page_first     o540
_journal_page_last     o542
_journal_paper_category     FO
_publ_contact_author
;
Professor Dr Peter Luger
Institut fur Chemie
Kristallographie
Freie Universitat Berlin
Takustr. 6
14195 Berlin
Germany
;
_publ_contact_author_email     'luger@chemie.fu-berlin.de'
_publ_contact_author_fax     '0049-30-83853464'
_publ_contact_author_phone     '0049-30-83853411'
_publ_section_title
;
L-Tryptophan formic acid solvate at 183K
;
loop_
    _publ_author_name
    _publ_author_address
    'Hübschle, Christian B.'
;
Institut für Chemie
Kristallographie
Freie Universität Berlin
Takustr. 6
14195 Berlin
Germany
;
    'Dittrich, Birger'
;
Institut für Chemie
Kristallographie
Freie Universität Berlin
Takustr. 6
14195 Berlin
Germany
;
    'Luger, Peter'
;
Institut für Chemie
Kristallographie
Freie Universität Berlin
Takustr. 6
14195 Berlin
Germany
;
