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Creator | Title | Description | Subject | Date |
1 |
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Miller, Joel Steven | Two-dimensional molecular-based ferrimamagnets incorporating decamethylmetallocenium cations | Four new molecular-based magnets have been synthesized, and their magnetic properties have been investigated in detail. Their formulae are [M'(C5Me5)2]2M2[Cu(opba)]3.(DMSO)x(H20)y with M' = Fe, M = Mn, x = 5, y = 4 (1), M' = Fe, M = Co, x = 6, y = 4 (2), M' = Co, M = Mn, x = 5.5, y = 4 (3) and M' = ... | Magnetic; Compounds | 1996 |
2 |
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Miller, Joel Steven; Epstein, Arthur J. | Tetracyanoethylene-based organic magnets | Several classes of organic magnets based upon the tetracyanoethenide radical anion, [TCNE](.-), either unbound, (u), and (u4) bonded to zero, two and four metal sites have been reported. The putative (u4) bonded V(TCNE)x room temperature magnet has been extended to include M(TCNE)x(M = Mn, Fe, Co,... | Magnetization; Magnetic ordering; Oxidation | 1998 |
3 |
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Morse, Michael David | Photodissociation measurements of bond dissociation energies: Ti?+, V?+, Co?+, and Co?+ | The bond dissociation energies of Ti2+, V+2 , Co+2, and Co: have been measured from the sudden onset of predissociation in the photodissociation spectra of these molecules, yielding values of D?(Ti+2)=2.435+0.002 eV, D?(V+2)=3.140?0.002 eV, D?(Co+2)=2.7651?0.001 eV, and D?(Co+3)=2.086?0.002 eV. Thes... | | 1993 |
4 |
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Miller, Joel Steven; Epstein, Arthur J. | Optical properties of quinolinium tetracyanoquinodimethanide, [Qn(TCNQ)2] and (N-methylphenazinium)x(phenazine)1-x (tetracyanoquinodimethane) [(NMP)x(Phen)1-x(TCNQ)] | We present here optical-absorption data of quinolinium ditetracyanoquinodimethanide [Qn(TCNQ)2] and (N-methylphenazinium)x(phenazine)1-x(tetracyanoquinodimethanide) [(NMP)x(Phen)1-x(TCNQ)] for 0.5 <_x<_ 0.6. These materials span the range of electronic structure from commensurate, to commensurate ... | Commensurate; Lattice; Electron | 1989 |
5 |
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Morse, Michael David | ???X??+ band systems of jet-cooled ScCo and YCo | Rotationally resolved resonant two-photon ionization (R2PI) spectra of ScCo and YCo are reported. The measured spectra reveal that these molecules possess ground electronic states of 1?+ symmetry, as previously found in the isoelectronic Cr2 and CrMo molecules. The ground state rotational constant... | | 2010 |
6 |
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Miller, Joel Steven; Epstein, Arthur J. | Linear chain ferromagnetic charge transfer compounds | Charge transfer complexes possessing a ... DADA ... structure with both the donor, D, and acceptor, A, being S = 1/2 radicals may exhibit cooperative magnetic phenomena. The complex [Fe(C5Me5)2]+ [TCNQ]-. exhibits metamagnetic behavior. The similarly structured [TCNE]-. and [C4(CN)6]-. complexes ar... | Spin; Exchange; Molecular | 1986 |
7 |
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Morse, Michael David | Rotationally resolved spectra of jet-cooled RuSi | We report the first gas-phase spectroscopic investigation of diatomic ruthenium silicide (RuSi). The molecules were produced by laser ablation of a Ru disk into a flow of helium carrier gas containing 0.5% SiH4, and were cooled in a supersonic expansion. The RuSi molecules were then studied using re... | | 2007 |
8 |
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Morse, Michael David | Resonant two-photon ionization spectroscopy of jet-cooled PtSi | Jet-cooled diatomic PtSi, produced in a laser ablation supersonic expansion source, has been spectroscopically investigated between 17 400 and 24 000 cm-1 by resonant two-photon ionization spectroscopy. Two vibrational progressions are observed and identified as the [15.7]?'=1 ?X 1?+ and [18.5]?'=1 ... | | 1999 |
9 |
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Morse, Michael David | Resonant two-photon ionization spectroscopy of jet-cooled OsC | The optical spectrum of diatomic OsC has been investigated for the first time, with transitions recorded in the range from 17 390 to 22 990 cm?1. Six bands were rotationally resolved and analyzed to obtain ground and excited state rotational constants and bond lengths. Spectra for six OsC isotopomer... | | 2008 |
10 |
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Morse, Michael David | Optical spectroscopy of jet-cooled NiSi | The electronic states of gaseous diatomic NiSi have been investigated using the combined techniques of resonant two-photon ionization spectroscopy, dispersed fluorescence spectroscopy, and density functional computations. A single electronic band system, designated as the [8.0]1?X 1?+ system, has be... | | 2003 |
11 |
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Miller, Joel Steven | Characterization of novel TCNQ and TCNE 1 : 1 and 1 : 2 salts of the tetrakis(dimethyamino) ethylene dication, [{(CH3)2N}2C-C{N(CH3)2}2]2+ | Addition of TCNQ to a solution of tetrakis(dimethylamino)ethylene in MeCN produces the salt [TDAE][TCNQ]2; the dipositive cation, [{(CH3)2N}2C-C{N(CH3)2}2]2+, is nonplanar, with a dihedral angle of 63.9(o), while the TCNQ anions crystallize as [TCNQ]2 2- dimers with an interplanar separation of 3.1... | Electron; Oxidations; Transfer | 1996 |
12 |
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Miller, Joel Steven; Epstein, Arthur J. | Solitons in nearly commensurate organic charge transfer crystals | X-ray diffuse scattering, magnetic, and conductivity studies of (N-methylphenazinium)x (phenazine)1-x (tetracyanoquinodimethan) [(NMPx(Phen)1-x (TCNQ)] show the formation of defect states for 0.50≤x≤0.54. These results are in agreement with the formation of solitons in a highly correlated quasi-... | Charge-transfer salts | 1983 |
13 |
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Morse, Michael David | Spectroscopic analysis of the open 3 d subshell transition metal aluminides: AIV, AICr, and AICo | Three open 3d subshell transition metal aluminides, AlV, AICr, and AlCo, have been investigated by resonant two-photon ionization spectroscopy to elucidate the chemical bonding in these diatomic molecules. The open nature of the 3d subshell results in a vast number of excited electronic states in th... | | 1994 |
14 |
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Morse, Michael David | Rotationally resolved spectra of jet-cooled VMo | The Author's report the first gas-phase spectroscopic investigation of diatomic vanadium molybdenum (VMo). The molecules were produced by laser ablation of a VMo alloy disk and cooled in a helium supersonic expansion. The jet-cooled VMo molecules were studied using resonant two-photon ionization sp... | | 2007 |
15 |
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Morse, Michael David | Optical spectroscopy of tungsten carbide (WC) | Resonant two-photon ionization spectroscopy has been used to study the diatomic transition-metal carbide, WC. A low-resolution scan revealed a five-member vibrational progression beginning with the 0-0 band at 17 585 cm-1. Analysis of this progression yielded a vibrational frequency of ?'e8(184W12C)... | | 2002 |
16 |
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Morse, Michael David | Spectroscopy of diatomic ZrF and ZrCl: 760 ? 555 nm | The optical spectrum of diatomic ZrF has been investigated, with transitions recorded in the range from 14 700 to 18 000 cm?1. Many bands have been observed, several of which can be grouped into three band systems. Rotationally resolved investigations are hampered by perturbations that are rampant ... | | 2011 |
17 |
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Miller, Joel Steven; Epstein, Arthur J. | Anomalous relaxation in a quasi-one-dimensional fractal cluster glass | The low-temperature spin glass state of the quasi-1D organic-based magnet [MnTPP]+[TCNE]- .x(1,3-C6H4Cl2) has unusually long relaxation times due to frustration induced by dipole-dipole interactions between fractal spin clusters. This long relaxation is investigated with in-field relaxation measurem... | Sweep rate; Bifurcation; Magnetization | 2004 |
18 |
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Morse, Michael David | Resonant two-photon ionization spectroscopy of LiCu | Jet-cooled LiCu has been investigated using resonant two-photon ionization spectroscopy. A long vibrational progression was observed and identified as the [20.5] 1?+? X 1?+ band system. Ten bands of the system were rotationally resolved for 7Li63Cu, giving bond lengths of r0=2.2618(3) ? for the X 1?... | | 1997 |
19 |
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Morse, Michael David | Optical spectroscopy of jet-cooled FeC between 12 000 and 18 100 cm-? | Iron monocarbide has been investigated between 12 000 and 18 100 cm21 in a supersonic expansion by resonant two-photon ionization spectroscopy. Six new electronic states have been identified for which origins relative to the ground state have been determined. Three of these possess ?"=3, one possess... | | 1997 |
20 |
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Armentrout, Peter B. | Electron impact ionization cross section of metastable N2(A Σu+) | Extensive studies of electron impact cross sections have been carried out both experimentally and theoretically for a number of ground state atoms and molecules.1 In general, as the electron energy is increased, such cross sections rise from a threshold at the ionization potential to a peak at an e... | Ion beam; Nitrogen | 1981 |
21 |
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Morse, Michael David | Resonant two-photon ionization spectroscopy of jet-cooled OsN: 520?418 nm | The optical transitions of supersonically cooled OsN have been investigated in the range from 19 200 to 23 900 cm?1 using resonant two-photon ionization spectroscopy. More than 20 vibronic bands were observed, 17 of which were rotationally resolved and analyzed. The ground state is confirmed to be 2... | | 2011 |
22 |
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Morse, Michael David | Spectroscopic analysis of jet-cooled AICu | Diatomic AlCu has been interrogated using resonant two-photon ionization spectroscopy in a supersonic expansion of helium. The ground state is shown to be X l?+, deriving from the 3&3dgd configuration, in agreement with theoretical predictions. The closed-shell nature of this molecule results in a l... | | 1993 |
23 |
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Miller, Joel Steven | Structure and magnetic properties of meso-tetrakis(2,4,6-trimethylphenyl)porphyrinatomanganese(III) 7,7,8,8-tetracyano 2,5-dimethyl-p-quinodimethanide with a 2.3 K Tc. The first example of cis-coordination of a tetracyano-p-quinodimethanide | The crystal structure of meso-tetrakis(2,4,6-trimethylphenyl)porphyrinatomanganese(III) 7,7,8,8-tetracyano-2,5-dimethyl-p-quinodimethanide, [MnTMesP][DMTCNQ]-2p-C6H4Me2 provides the first example of a cis-1,2-u-coordination motif having an infinite zigzag chain structure. [MnTMesP][DMTCNQ]-2p-C6H4Me... | Magnets; Interactions; Coupling | 2000 |
24 |
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Morse, Michael David | Spectroscopy and electronic structure of jet-cooled Al? | Resonant two-photon ionization spectroscopy has been used to study the jet-cooled Al? molecule. The ground state has been conclusively demonstrated to be of 3IIu symmetry, deriving from the ???rr?u electronic configuration. High resolution studies have established the bond length of the X?IIu state ... | | 1990 |
25 |
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Morse, Michael David | Resonant two-photon ionization spectroscopy of jet-cooled PdSi | The spectra of diatomic PdSi have been investigated for the first time, using the technique of resonant two-photon ionization spectroscopy. A number of vibronic transitions have been observed in the 20 400?22 000 cm?1 range. It is difficult to group the bands into band systems, although one likely... | | 2011 |