What are the major IR frequency peaks of diphenylacetylene?
470381
C triple bond around 2200cm^-1
686965
migs is correct.\n\nFor just a qualitative identification of functional groups, IR is the best for organic (and some inorganic) compounds. You load it in and, a few minutes later, you have a spectrum that tells you what groups you have. (assuming your compound is reasonably pure)
1107805
study on intermolecular particals and there behavior
978796
Study of data with respect to different spectral responses
501994
http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/posfe.html#c3\n\nThe link above may be of some help. Input the values you want or need.
414639
Click on the source link.  The site contains the absorption as well as fluorescence spectra.
223542
thermodynamic factors as well as the orientation and relative energies of the pi molecular orbitals involved.
215160
http://www-ec.njit.edu/~skawinsk/chem243/chap11/chap11.htm\nthis may help–near the bottom
768102
p,p-dichloro diphenyl trichloroethane
320096
What he said, except the doublets would likely have some fine meta coupling if you have a high enough resolution NMR.  You should be able to see this with 300MHz or higher.  I use a 400MHz and almost always see meta coupling.
172774
your formula refers to several different structures which of course would give different NMR spectra. It could be 2-bromo-X-methylpyridine where X is the 3,4,5 or 6 position or Bromoaniline, with the various positional isomers. If you don't know the name go to the sigma website and find the structure/name (it may even have the NMR).
142302
Resonance in the pi-electron orbitals.
871578
http://www.olysun.com/Chem_121/Soln.html\n\n\ncc
312552
A two-color three-photon ionization technique, using two pulsed dye lasers, was employed to explore the high-lying energy levels of U I. A number of new U I levels in the 34 290--35 120-cm/sup -1/ region was observed.^Uncertainty in the assignment of J values to some levels known from earlier studies was also reduced or removed.\n\nHUH? Is that what you want?\n\nEDIT\nAbstract. Two-colour resonance ionization spectroscopy was used for identification of 240 new levels of 238U in the energy range of 38 500 to 41 200 cm-1. A precision of +or-0.03 cm-1 (1 SD) for the energies was obtained by using laser-induced fluorescence signals of I2 for spectral calibration. The angular momentum quantum number, J, was uniquely assigned for 134 of these levels by using angular momentum selection rules. \n\nThats a little more specific\nAnd some more\n\nAbstract. Visible and infrared absorption measurements on the  ion in tetragonal zircon-type matrix  are reported and analysed in terms of the standard parametrization scheme. The observed 17 main peaks and a number of less intense lines have been assigned and fitted to most of the 32 allowed electric dipole transitions with the root mean square error equal to . The free-ion parameters obtained for the model Hamiltonian, , ,  and , as well as the corresponding crystal-field parameters, , , ,  and , agree fairly well with the initial theoretical estimations. The results are discussed in relation to the previous spectroscopic study on the scheelite-type matrix .
93949
Frequency 480 - 405 thz (terahertz)
360845
Yes. those of frequency higher than infra red are absorbed by the PV. IR travels right through the silicon in the PV
574078
This might help :)\nhttp://www.chemicalforums.com/index.php?board=8;action=display;threadid=3263