Abstract
The reactions of appropriate ratios of K2TeO3 and [Mn2(CO)10] in superheated methanol solutions lead to a series of novel cluster anions [Te4Mn3(CO)10]- (1), [Te2Mn3(CO)9]2- (2), [Te2Mn3(CO)9]- (3), and [Te2Mn4- (CO)12]2- (4). When cluster 1 is treated with [Mn2(CO)10]/KOH in methanol, paramagnetic cluster 2 is formed in moderate yield. Cluster 2 is oxidized by [Cu(MeCN)4]BF4 to give the closo-cluster [Te2Mn3(CO)9]- (3), while treatment of 2 with [Mn2(CO)10]/KOH affords the closo-cluster 4. IR spectroscopy showed that cluster 1 reacted with [Mn2(CO)10] to give cluster 4 via cluster 2. Clusters 1-4 were structurally characterized by spectroscopic methods or/and X-ray analyses. The core structure of 1 can be described as two [Mn(CO)3] groups doubly bridged by two Te2 fragments in a μ2-η2 fashion. Both [Mn(CO)3] groups are further coordinated to one [Mn(CO)4] moiety. Cluster 2 is a 49 e- species with a square-pyramidal core geometry. While cluster 3 displays a trigonal-bipyramidal metal core, cluster 4 possesses an octahedral core geometry.
| Original language | English |
|---|---|
| Pages (from-to) | 3152-3158 |
| Number of pages | 7 |
| Journal | Chemistry - A European Journal |
| Volume | 7 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2001 Jul 16 |
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Keywords
- Bridging ligands
- Carbonyl ligands
- Cluster compounds
- Manganese
- Tellurium
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry
Cite this
Tellurium-bridged manganese carbonyl clusters : Synthesis and structural transformations of [Te4Mn3(CO)10]-, [Te2Mn3(CO)9]2-, [Te2Mn3(CO)9]-, and [Te2Mn4(CO)12]2-. / Shieh, Minghuey; Chen, Horng Sun; Yang, Huey Yea; Lin, Shu Fen; Ueng, Chuen Her.
In: Chemistry - A European Journal, Vol. 7, No. 14, 16.07.2001, p. 3152-3158.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Tellurium-bridged manganese carbonyl clusters
T2 - Synthesis and structural transformations of [Te4Mn3(CO)10]-, [Te2Mn3(CO)9]2-, [Te2Mn3(CO)9]-, and [Te2Mn4(CO)12]2-
AU - Shieh, Minghuey
AU - Chen, Horng Sun
AU - Yang, Huey Yea
AU - Lin, Shu Fen
AU - Ueng, Chuen Her
PY - 2001/7/16
Y1 - 2001/7/16
N2 - The reactions of appropriate ratios of K2TeO3 and [Mn2(CO)10] in superheated methanol solutions lead to a series of novel cluster anions [Te4Mn3(CO)10]- (1), [Te2Mn3(CO)9]2- (2), [Te2Mn3(CO)9]- (3), and [Te2Mn4- (CO)12]2- (4). When cluster 1 is treated with [Mn2(CO)10]/KOH in methanol, paramagnetic cluster 2 is formed in moderate yield. Cluster 2 is oxidized by [Cu(MeCN)4]BF4 to give the closo-cluster [Te2Mn3(CO)9]- (3), while treatment of 2 with [Mn2(CO)10]/KOH affords the closo-cluster 4. IR spectroscopy showed that cluster 1 reacted with [Mn2(CO)10] to give cluster 4 via cluster 2. Clusters 1-4 were structurally characterized by spectroscopic methods or/and X-ray analyses. The core structure of 1 can be described as two [Mn(CO)3] groups doubly bridged by two Te2 fragments in a μ2-η2 fashion. Both [Mn(CO)3] groups are further coordinated to one [Mn(CO)4] moiety. Cluster 2 is a 49 e- species with a square-pyramidal core geometry. While cluster 3 displays a trigonal-bipyramidal metal core, cluster 4 possesses an octahedral core geometry.
AB - The reactions of appropriate ratios of K2TeO3 and [Mn2(CO)10] in superheated methanol solutions lead to a series of novel cluster anions [Te4Mn3(CO)10]- (1), [Te2Mn3(CO)9]2- (2), [Te2Mn3(CO)9]- (3), and [Te2Mn4- (CO)12]2- (4). When cluster 1 is treated with [Mn2(CO)10]/KOH in methanol, paramagnetic cluster 2 is formed in moderate yield. Cluster 2 is oxidized by [Cu(MeCN)4]BF4 to give the closo-cluster [Te2Mn3(CO)9]- (3), while treatment of 2 with [Mn2(CO)10]/KOH affords the closo-cluster 4. IR spectroscopy showed that cluster 1 reacted with [Mn2(CO)10] to give cluster 4 via cluster 2. Clusters 1-4 were structurally characterized by spectroscopic methods or/and X-ray analyses. The core structure of 1 can be described as two [Mn(CO)3] groups doubly bridged by two Te2 fragments in a μ2-η2 fashion. Both [Mn(CO)3] groups are further coordinated to one [Mn(CO)4] moiety. Cluster 2 is a 49 e- species with a square-pyramidal core geometry. While cluster 3 displays a trigonal-bipyramidal metal core, cluster 4 possesses an octahedral core geometry.
KW - Bridging ligands
KW - Carbonyl ligands
KW - Cluster compounds
KW - Manganese
KW - Tellurium
UR - http://www.scopus.com/inward/record.url?scp=0035898309&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035898309&partnerID=8YFLogxK
U2 - 10.1002/1521-3765(20010716)7:14<3152::AID-CHEM3152>3.0.CO;2-B
DO - 10.1002/1521-3765(20010716)7:14<3152::AID-CHEM3152>3.0.CO;2-B
M3 - Article
C2 - 11495441
AN - SCOPUS:0035898309
VL - 7
SP - 3152
EP - 3158
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 14
ER -