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Instruments
Currently, we have 8 spectrometers - 7 NMR and 1
EPR spectrometers.
The capabilities of these spectrometers are listed in the following table.
Spectrometers in Harvard Chemistry MR Facility
MODEL |
PROBE |
SENSITIVITY* |
TEMP
RANGE |
AVAILABLE
EXPERIMENTS |
REMARK |
Bruker
Avance
700 |
5mm
triple-res cryoprobe |
7700
(H) |
0
to 50 ēC |
1H
nD |
z-gradient |
Varian
INOVA600 |
5mm
inverse triple-res.
4mm
nanoprobe |
800
(H)
2000
(H) |
0
to 50 ēC
0
to 50 ēC |
1H
nD
1H
nD |
z-gradient
only
1H
HRMAS only |
Varian
I500 |
5mm
idpfg
4mm
nanoprobe |
800
(H), 100 (C)
2000
(H) |
-80
to +120 ēC
0
to 50 ēC |
nD
(1H, 13C)
nD
(1H, 13C) |
all
1H detected expts, z-gradient
HRMAS |
Varian
I500C |
5
mm idpfg
5mm
X probe |
800
(H), 100 (C)
400(H), 250 (C) |
-80
to +120 ēC |
nD
(1H, 13C) |
all
1H detected expts, z-gradient
highest
13C sensitivity |
Varian
I500B |
5
mm idpfg
3mm
probe
CapNMR
probe |
800
(H), 100 (C)
300
(C)
40** |
-80
to +120 ēC
-80
to +120 ēC
0
to 50 ēC |
nD
(1H, 13C) |
all
1H detected expts, z-gradient
highest
13C mass sensitivity
highest
1H/13C mass sensitivity |
Varian
M400 |
5
mm 4-nuclei |
180
(H), 180 (C) |
-80
to +120 ēC |
1D,
2D (1H, 13C, 19F) |
z-gradient,
|
Varian
M400B |
5
mm 4-nuclei |
180
(H), 140 (C) |
-80
to +120 ēC |
1D,
2D (1H, 31P,13C, 19F) |
z-gradient |
Varian
M300 |
5
mm H/X |
100
(H) |
-80
to +120 ēC |
1D, 2D (1H, 19F, 11B) |
z-gradient,
other nuclei available |
ESP300E |
st9202 |
std |
3
to 300 ēK |
EPR |
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*The 1H sensitivity is
measured by the S/N of the largest peak in the methylene quartet
of 0.1% Ethylbenzne in deuterated
chloroform in a Wilmad 528pp tube. The 13C sensitivity
is measured by the S/N of the largest
peak in the spectrum of 40% p-dioxane in per-deuterated
benzene (ASTM) in a Wilmad 528 tube.
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