th  - 1988 - 51st ENC Conference

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TUE 11:20 ELIMINATION OF PHASE ROLL, SOLVENT SUPPRESSION, AND UNIFORM SPIN-I EXCITATION WITH SHAPED PULSES: Warren S. Warren, Mark McCoy and Andy Hasenfeld*, Department of Chemistry, Princeton University, Princeton, NJ 08544 We have recently shown that purely amplitude modulated or phase/amplitude modulated pulses can eliminate phase roll while exciting regions as narrow as 15 Hz; can produce undistorted two-dimensional spectra off resonance while completely eliminating the solvent peak; and can excite a broader quadrupolar powder pattern for the same amplifier peak power. All of these experiments were done with a slightly modified commercial spectrometer. Theoeretical work has uncovered a new infinite family of pulses with a rectangular excitation profile and complete insensitivity to r.f. field strength (similar to the (sech(aT)) l+Di pulses demonstrated by Silver), but the additional degrees of freedom permit improved phase characteristics and give new insight into the effects of pulse shaping. References: M. McCoy and W.S. Warren, Chem. Phys. Lett. 133, 165 (1987). F. Loaiza, M. McCoy, S. Hammes and W.S. Warren, J. Mag. Res. (in press). A. Hasenfeld, Phys. Rev. Left. (submitted). 40
TUE 11:30 J FREQUENCY SWITCHED INVERSION PULSES AND THEIR APPLICATION TO BROADBAND DECOUPLING; Toshimichi Fujiwara and Kuniaki Nagayama Biometrology Lab, JEOL Ltd. Nakagami, Akishima, Tokyo 196, Japan First, the broadband inversion pulses with coherent frequency switching were designed. They are made of a few 180°-like pulses which are different in frequency of about 1.5 x B , where B indicates strength of r.f. field. The refined frequency differences and pulse widths were numerically searched under the constraint of symmetry about offset frequency. The operative frequency range of these pulses is about 1.2 x B x n, where n is the number of frequencies used, or the number of 180 ° pulses in the sequence. Second, its performance and the tolerance to inhomogeneity of B field were improved by the phase cycling of 0 ° , 150 ° , 60 ° , 150 ° , 0°. * Finally, decoupling pulse sequences were constructed from these improved inversion pulses using the phase cycle employed in MLEV-4. The performance of these pulse sequences was experimentally tested, and theoretically evaluated with two scaling factors; J-scaling factor which characterizes the decoupling on a long time scale (long period scaling) and a scaling factor which characterizes the decoupling on a short time (short period scaling). *R.Tycko, A. Pines, Chem. Phys. Letters iii, 462 (1984). 41
Page 1 and 2: 29 th �� - 1988 Rochester
Page 3 and 4: PROGRAM: This conference program ha
Page 5 and 6: The Executive Committee of the 29th
Page 7 and 8: A A 0 0 ,-..1 I Z Z 0 "c N "1" i 0
Page 9 and 10: Restaurants in Rochester Restaurant
Page 11 and 12: 8:30 a.m. 8:35- 10:05 10:05 - 10:25
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Page 15 and 16: f~ I UNTRUNCATIO~I OF DIPOLE-DIPOLE
Page 17 and 18: MON 9:25 HIGH RESOLUTION ELECTROPHO
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Page 21 and 22: ~'-O-i 0 N i0:55 MEASUREMENTS OF TW
Page 23 and 24: MON 11:3S 12D CHEMICAL SHIFT ANISOT
Page 25 and 26: 7:30 p.m. 8:00 p.m. 8:10 p.m. 8:40
Page 27 and 28: HON Eve 8:00 The 13C Relaxation Beh
Page 29 and 30: THE WORLD AND WONDERS OF 3H NMR SPE
Page 31 and 32: 8:30 a.m. 9:00 a.m. 9:10 a.m. 9:20
Page 33 and 34: TWO DIMENSIONAL LINEAR PREDICTION N
Page 35 and 36: TUE 9"20 ] 2D ROTATING FRAME SPECTR
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Page 39: TUE ii'00 J WATER SUPPRESSION TECHN
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Page 45 and 46: • . r T[-~-UE ~ t~ve 8:00! 63,65C
Page 47 and 48: TUE Eve 8-50 } Cu NQR OF YBa2Cu30 x
Page 49 and 50: ~X [I'IED 8:30 I REMOVAL OF EXTRANE
Page 51 and 52: . r WED 9:25 ] A STATIC NMR IMAGE O
Page 53 and 54: WED 9" 45 IFLUID AND SOLID STATE NM
Page 55 and 56: i MULTIVOLUME SELECTIVE SPECTROSCOP
Page 57 and 58: [WED 11-10 I SELF SHIELDED GRADIENT
Page 59 and 60: [WED 11:45 ] ANGIOGRAPHY USING MAGN
Page 61 and 62: THU 8:30 "TETHERED" BIOLOGICAL SYST
Page 63 and 64: • / I DYNAMICS OF THE GRAMICIDIN
Page 65 and 66: I THU 9:40 I NMR STUDIES OF ANTI-SP
Page 67 and 68: THU 10"2S I NEW TECHNIQUES POR DYNA
Page 69 and 70: I THU 11 : 05 I DYNAMIC NUCLEAR POL
Page 71 and 72: THIS SECTION CONTAINS A LISTING OF
Page 73 and 74: 9 ELIMINATION OF PHASE ROLL, SOLVEN
Page 75 and 76: 25 NUCLEAR MAGNETIC RESONANCE STUDI
Page 77 and 78: ~k 41 A HYPO-RELAXATION AGENT; SIMU
Page 79 and 80: 57 STRUCTURAL STUDIES OF LIPIDS IN
Page 81 and 82: 73 THE AUTOMATED NMR LABORATORY; SP
Page 83 and 84: 89 13C NMR ASSIGNMENTS OF DNA OLIGO
Page 85 and 86: 105 EVALUATION OF DOUBLE TUNED CIRC
Page 87 and 88: 121 BROADBAND SPIN DECOUPLING IN TH
Page 89 and 90: 137 TWO-DIMENSIONAL 13C{15N}, 13C{1
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153 NMR CHARACTERIZATION OF THE SOL
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169 SPECTROSCOPY WITH EXACT APODIZA
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185 PARSING THE EDITED 1H NMR SIGNA
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. z 201 THE CORRELATION OF 1H-19F C
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i m 3 I 31p SOLID STATE NMR STUDIES
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CALCULATION OF 2951MAS NMR CHEMICAL
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AN NMR STUDY OF MISCIBLE BLENDS IN
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15 II9F CRAMPS OF INORGANIC FLUORID
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19 I DIPOLARAND SPIN-ROTATION POLAR
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2 3- I A SOLID-STATE 2H and 13C NMR
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27 1 COLLECTION OF PHOSPHORUS-31 NM
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31 DELAYED REFOCUSSING TWO-DIMENSIO
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35 DYNAMIC NUCLEAR POLARIZATION STU
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I 39 2D NMR STUDIES AT 600 MHZ OF A
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43 Coherent Averaging Theory Under
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46 CARBON-13 SPECTRAL ASSIGNMENTS O
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a b 48 SEMUT SPECTRAL EDITING, CALI
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'--- V 5 2 j INTERCONWERSION OF VAL
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[ ~ THE SOURCE OF AN ARTIFACT IN TH
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60 GLUCOSE METABOLISM IN PERFUSED H
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. °- F 64 I MICROSCOPIC IMAGING OF
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68 69 CONFORMATIONAL ANALYSIS via V
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72 I SCUBA, A MAY TOHARDS COMPLETE
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76 NMR CHARACTERIZATION OF THE GLYP
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8o I HIGH RESOLUTION MR IMAGING AT
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A PROBE WITH HIGHER DECOUPLING EFFI
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88 I SOLID STATE ll3cd I~CLEAR }~GE
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- - 92 l CHARACTERIZATION OF NORMAL
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96 AN EVALUATION OF NEW PROCESSING
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. . I00 I NOVEL RESONATOR DESIGNS,
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104 TAYLOR TRANSFORMATION OF 2D NMR
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108 PERFORMANCE COMPARISON OF DOUBL
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RECENT EXTENSIONS OF NOESYSIM, A PR
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116 ] NODIFICATIONS TO A JEOL GX270
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I 12 o I SPECIATION OF WATER IN GLA
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124 I A COMPLETELY INTEGRATED NETWO
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I-- 1 2 8 IVOLUME-SELECTIVE SIGNAL
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-- is 2 I NATURAL ABUNDANCE 13 C an
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. ° THREE-DIMENSIONAL STRUCTURE OF
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~-'-- 140 DIRECT OBSERVATION OF LON
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144 I I IH AND 13C REFOCUSED GRADIE
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~ (POSTER ABSTRACT) BARBARA LYONS/C
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1 52 I ~IR STUDY OF NAPHTHALENE TRA
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is6 I ROTATING FRAME COHERENCE TRAN
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16 0 I A 27AL MAS STUDY OF AMORPHOU
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164 I MODIFICATIOH OF A BRUKER WH-3
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IN VIVO 31p AND IH NMR SPECTROSCOPY
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. r 172 JMAGIC ANGLE SPINNING SEPAR
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2 . ° I- 176 I Michael A. Kennedy
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. o . o 180 l17o/Is NMR MICROSCOPY
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To be presented at the 29th Experim
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INHIBITION OF ALANINE RACEMASE BY T
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192 RESOLUTION ENHANCEMENT OF PHOSP
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196 1 TR FLUOROETHOXY DERIVATIVES:
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200 INTERPRETAT IION OF 13 C NHR MI
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204 RECENT PROGRESS IN HIGH RESOLUT
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Page No. ACEVEDO, H F 165 ACKERMAN,
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1:~ge No. GUO, D 200 GUO, W 196 GUO
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OPELLA, S J ORENDT, A M OTTING, G P
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ZLOTNIK-MAZORIo T ZUMBULYADIS, N Pa
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David B. Bailey USI Chemicals Co. 1
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Yvan Boulanger Univ de Montreal Ins
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Helga Cohen Univ of So Carolina Che
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F. David Doty Doty Scientific Inc.
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Alan Freyer Pennsylvania State Univ
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Gordon Hamer Xerox Research Center-
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Timothy Hyman Syracuse University 3
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Robert A Kinsey BF Goodrich 9921Bre
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Jay J. Listinsky U of Rochester-Dep
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Dale Mierke Univ of Calif, San Dieg
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Jeanne C Owens Chemistry Dept., '.1
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Gade S. Reddy DuPont Experimental S
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Charles Schramm Catalytica Assoc. I
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Richard F. Sprecher U.S. Dept of En
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Steve Unger U. C. Davis NMR Facilit
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Toni Wirthlin Varian Associates 611
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th  - 1988 - 51st ENC Conference

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