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Properties of substance:
rhenium
Group of substances:
inorganic
Physical appearance:
hexagonal metal
Empirical formula (Hill's system for organic substances):
Re
Structural formula as text:
Re
Molar/atomic mass: 186.21
Melting point (°C):
3190
Boiling point (°C):
5600
Solubility (g/100 g of solvent):
aluminum fused
: soluble [
Ref.
]
copper liquid
: insoluble [
Ref.
]
iron fused
: soluble [
Ref.
]
mercury
: insoluble [
Ref.
]
silver
: insoluble [
Ref.
]
tin liquid
: insoluble [
Ref.
]
water
: insoluble [
Ref.
]
Numerical data:
Year of discovery: 1925
Superconducting temperature (K): 1.697
Density:
21.04 (20°C, g/cm
3
)
Reactions of synthesis:
[
Ref.1
]
2KReO
4
+ 7H
2
→ 2Re + 2KOH + 6H
2
O
[
Ref.1
]
2NH
4
ReO
4
+ 7H
2
→ 2Re + 2NH
3
+ 8H
2
O
Reactions:
[
Ref.1
]
Re + 3F
2
→ ReF
6
Yeild 80%. [
Ref.1
]
2Re + 5Cl
2
→ 2ReCl
5
Half-life:
159m
75
Re = 21.6 μs (α (7.5%))
160
75
Re = 611 μs (p (89%), α (11%))
160m
75
Re = 2.8 μs (internal transition (100%))
161
75
Re = 440 μs (p (about 100%), α (< 1.4%))
161m
75
Re = 14.7 ms (α (93.0%), p (7.0%))
162
75
Re = 107 ms (α (94%))
162m
75
Re = 77 ms (α (91%))
163
75
Re = 390 ms (α (32%))
163m
75
Re = 214 ms (α (66%))
164
75
Re = 719 ms ()
164m
75
Re = 890 ms (α (3%))
165
75
Re = 2.62 s (α (14%))
165m
75
Re = 1.74 s (α (13%))
166
75
Re = 2.25 s (α (5%))
167
75
Re = 3.4 s (α (about 100%))
167m
75
Re = 5.9 s (β
+
(about 99%), α (about 1%))
168
75
Re = 4.4 s (β
+
(about 100%), α (0.005%))
169
75
Re = 8.1 s ()
169m
75
Re = 15.1 s ()
170
75
Re = 9.2 s (β
+
(about 100%))
171
75
Re = 15.2 s (β
+
(100%))
172
75
Re = 15 s (β
+
(100%))
172m
75
Re = 55 s (β
+
(100%))
173
75
Re = 2.0 min (β
+
(100%))
174
75
Re = 2.40 min (β
+
(100%))
175
75
Re = 5.89 min (β
+
(100%))
176
75
Re = 5.3 min (β
+
(100%))
177
75
Re = 14 min (β
+
(100%))
177m
75
Re = 50 μs (internal transition (100%))
178
75
Re = 13.2 min (β
+
(100%))
179
75
Re = 19.5 min (β
+
(100%))
179m
75
Re = 95 μs (internal transition (100%))
179n
75
Re = 408 ns (internal transition (100%))
179p
75
Re = 466 μs (internal transition (100%))
180
75
Re = 2.46 min (β
+
(100%))
180n
75
Re = 9.0 μs (internal transition (100%))
181
75
Re = 19.9 hasа (β
+
(100%))
181m
75
Re = 156.7 ns (internal transition (100%))
181n
75
Re = 250 ns (internal transition (100%))
181p
75
Re = 11.5 μs (internal transition (100%))
181q
75
Re = 1.2 μs (internal transition (100%))
182
75
Re = 64.2 hasа (β
+
(100%))
182m
75
Re = 14.14 hasа (β
+
(100%))
182n
75
Re = 585 ns (internal transition (100%))
182p
75
Re = 780 ns (internal transition (100%))
183
75
Re = 70.0 d (electron capture (100%))
183m
75
Re = 1.04 μs (internal transition (100%))
184
75
Re = 35.4 d (β
+
(100%))
184m
75
Re = 169 d (internal transition (74.5%), electron capture (25.5%))
185
75
Re = stable ( (isotopic abundance 37,4%))
185m
75
Re = 121 ns (internal transition (100%))
186
75
Re = 3.7183 d (β
-
(92.53%), electron capture (7.47%))
186m
75
Re = 200 000 y ()
187
75
Re = 43 300 000 000 y (β
-
(100%) (isotopic abundance 62,6%))
187m
75
Re = 555.3 ns (internal transition (100%))
187n
75
Re = 354 ns (internal transition (100%))
188
75
Re = 17.0040 d (β
-
(100%))
188m
75
Re = 18.59 min (internal transition (100%))
189
75
Re = 24.3 hasа (β
-
(100%))
189m
75
Re = 223 μs (internal transition (100%))
190
75
Re = 3.1 min (β
-
(100%))
190m
75
Re = 3.2 hasа (β
-
(54.4%))
191
75
Re = 9.8 min (β
-
(100%))
191m
75
Re = 51 μs (internal transition (100%))
192
75
Re = 16.0 s (β
-
(100%))
192m
75
Re = 88 μs (internal transition (100%))
192n
75
Re = 70 s ()
193m
75
Re = 69 μs (internal transition (100%))
194
75
Re = 5 s (β
-
(100%))
194m
75
Re = 25 s (β
-
(100%))
194n
75
Re = 100 s (β
-
(100%))
194p
75
Re = 45 μs (internal transition (100%))
194q
75
Re = 38 μs (internal transition (100%))
195
75
Re = 6 s (β
-
(100%))
196
75
Re = 2.4 s ()
Vapour pressure (Torr):
0.01 (3060°C)
0.1 (3375°C)
1 (3760°C)
10 (4250°C)
100 (4880°C)
Electrode potential:
Re
3+
+ 3e
-
→ Re, E = 0.3 V (water, 25°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
0 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
0 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
36.5 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
25.2 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
33.5
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
715.5
LD
50
(mg/kg):
10000 (rats, intraperitoneal)
References:
Inorganic Syntheses. - Vol. 1. - New York and London, 1939. - pp. 175-178
Вредные химические вещества: Неорганические соединения элементов V-VIII групп. Справочник. - Л., 1989. - pp. 424-425 [Russian]
Гурвич Я.А. Справочник молодого аппаратчика-химика. - М.: Химия, 1991. - pp. 51 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 91 [Russian]
Редкие и рассеянные элементы. Химия и технология. - Кн. 3. - М.: Мисис, 2003. - pp. 313-315, 333-365 [Russian]
Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 236-238 [Russian]
Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 505 [Russian]
Химия и технология редких и рассеянных элементов. - Ч. 3. - М.: Высшая школа, 1976. - pp. 277-279 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru