Higher nuclearity clusters containing osmium and tin atoms. Synthesis and structure of [(OC)3Os(SnMe2)]3, Os4(SnMe2)4(CO)14, and Os4(μ3-O)2(SnMe2) 4(CO)14

Weng Kee Leong; Frederick W.B. Einstein; Roland K. Pomeroy

doi:10.1021/om950670r

Higher nuclearity clusters containing osmium and tin atoms. Synthesis and structure of [(OC)₃Os(SnMe₂)]₃, Os₄(SnMe₂)₄(CO)₁₄, and Os₄(μ₃-O)₂(SnMe₂) ₄(CO)₁₄

Weng Kee Leong, Frederick W.B. Einstein, Roland K. Pomeroy^*

^*Corresponding author for this work

Simon Fraser University

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Pyrolysis of [(OC)₄Os(SnMe₂)]₂ (1) at 170°C gave [(OC)₃Os(SnMe₂)]₃ (2) as the major product. The structure of 2 reveals a planar triangulated (raftlike) Os₃Sn₃ unit (6 crystallographic symmetry, with Os-Os = 2.974(1) Å and Os-Sn = 2.667(1) and 2.673(1) Å). UV irradiation of 1 in hexane provided the yellow, insoluble Os₄(SnMe₂)₄(CO)₁₄ (3). The structure of 3 shows an essentially planar Os₄Sn₄ skeleton comprised of a central rhomboidal Os₂Sn₂ unit with each Os atom part of two outer Os₂Sn triangles. The Os-Sn bonds of the Os₂Sn₂ unit at 2.760(1) and 2.780(1) Å are significantly longer than the corresponding bonds of the Os₂Sn groups (2.678(1) and 2.727(1) Å); the Os-Os bonds in 3 are long at 3.0414(5) A. From the treatment of 1 in solution with Me₃NO, Os₄(μ₃-O)₂(SnMe₂) ₄(CO)₁₄ (4) was isolated in low yield. The structure of 4 has a central six-membered (OsOSn)₂ ring to which are fused two OsOSnOs rings such that each outer ring shares a common OsO edge with the central ring. The outer rings of 4 are planar, but the central ring has a boat conformation.

Original language	English
Pages (from-to)	1582-1588
Number of pages	7
Journal	Organometallics
Volume	15
Issue number	6
DOIs	https://doi.org/10.1021/om950670r
Publication status	Published - Mar 19 1996
Externally published	Yes

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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@article{f3c283529f984bef9cd0c46f8835ec3c,

title = "Higher nuclearity clusters containing osmium and tin atoms. Synthesis and structure of [(OC)3Os(SnMe2)]3, Os4(SnMe2)4(CO)14, and Os4(μ3-O)2(SnMe2) 4(CO)14",

abstract = "Pyrolysis of [(OC)4Os(SnMe2)]2 (1) at 170°C gave [(OC)3Os(SnMe2)]3 (2) as the major product. The structure of 2 reveals a planar triangulated (raftlike) Os3Sn3 unit (6 crystallographic symmetry, with Os-Os = 2.974(1) {\AA} and Os-Sn = 2.667(1) and 2.673(1) {\AA}). UV irradiation of 1 in hexane provided the yellow, insoluble Os4(SnMe2)4(CO)14 (3). The structure of 3 shows an essentially planar Os4Sn4 skeleton comprised of a central rhomboidal Os2Sn2 unit with each Os atom part of two outer Os2Sn triangles. The Os-Sn bonds of the Os2Sn2 unit at 2.760(1) and 2.780(1) {\AA} are significantly longer than the corresponding bonds of the Os2Sn groups (2.678(1) and 2.727(1) {\AA}); the Os-Os bonds in 3 are long at 3.0414(5) A. From the treatment of 1 in solution with Me3NO, Os4(μ3-O)2(SnMe2) 4(CO)14 (4) was isolated in low yield. The structure of 4 has a central six-membered (OsOSn)2 ring to which are fused two OsOSnOs rings such that each outer ring shares a common OsO edge with the central ring. The outer rings of 4 are planar, but the central ring has a boat conformation.",

author = "Leong, {Weng Kee} and Einstein, {Frederick W.B.} and Pomeroy, {Roland K.}",

year = "1996",

month = mar,

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doi = "10.1021/om950670r",

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T1 - Higher nuclearity clusters containing osmium and tin atoms. Synthesis and structure of [(OC)3Os(SnMe2)]3, Os4(SnMe2)4(CO)14, and Os4(μ3-O)2(SnMe2) 4(CO)14

AU - Leong, Weng Kee

AU - Einstein, Frederick W.B.

AU - Pomeroy, Roland K.

PY - 1996/3/19

Y1 - 1996/3/19

N2 - Pyrolysis of [(OC)4Os(SnMe2)]2 (1) at 170°C gave [(OC)3Os(SnMe2)]3 (2) as the major product. The structure of 2 reveals a planar triangulated (raftlike) Os3Sn3 unit (6 crystallographic symmetry, with Os-Os = 2.974(1) Å and Os-Sn = 2.667(1) and 2.673(1) Å). UV irradiation of 1 in hexane provided the yellow, insoluble Os4(SnMe2)4(CO)14 (3). The structure of 3 shows an essentially planar Os4Sn4 skeleton comprised of a central rhomboidal Os2Sn2 unit with each Os atom part of two outer Os2Sn triangles. The Os-Sn bonds of the Os2Sn2 unit at 2.760(1) and 2.780(1) Å are significantly longer than the corresponding bonds of the Os2Sn groups (2.678(1) and 2.727(1) Å); the Os-Os bonds in 3 are long at 3.0414(5) A. From the treatment of 1 in solution with Me3NO, Os4(μ3-O)2(SnMe2) 4(CO)14 (4) was isolated in low yield. The structure of 4 has a central six-membered (OsOSn)2 ring to which are fused two OsOSnOs rings such that each outer ring shares a common OsO edge with the central ring. The outer rings of 4 are planar, but the central ring has a boat conformation.

AB - Pyrolysis of [(OC)4Os(SnMe2)]2 (1) at 170°C gave [(OC)3Os(SnMe2)]3 (2) as the major product. The structure of 2 reveals a planar triangulated (raftlike) Os3Sn3 unit (6 crystallographic symmetry, with Os-Os = 2.974(1) Å and Os-Sn = 2.667(1) and 2.673(1) Å). UV irradiation of 1 in hexane provided the yellow, insoluble Os4(SnMe2)4(CO)14 (3). The structure of 3 shows an essentially planar Os4Sn4 skeleton comprised of a central rhomboidal Os2Sn2 unit with each Os atom part of two outer Os2Sn triangles. The Os-Sn bonds of the Os2Sn2 unit at 2.760(1) and 2.780(1) Å are significantly longer than the corresponding bonds of the Os2Sn groups (2.678(1) and 2.727(1) Å); the Os-Os bonds in 3 are long at 3.0414(5) A. From the treatment of 1 in solution with Me3NO, Os4(μ3-O)2(SnMe2) 4(CO)14 (4) was isolated in low yield. The structure of 4 has a central six-membered (OsOSn)2 ring to which are fused two OsOSnOs rings such that each outer ring shares a common OsO edge with the central ring. The outer rings of 4 are planar, but the central ring has a boat conformation.

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Higher nuclearity clusters containing osmium and tin atoms. Synthesis and structure of [(OC)₃Os(SnMe₂)]₃, Os₄(SnMe₂)₄(CO)₁₄, and Os₄(μ₃-O)₂(SnMe₂) ₄(CO)₁₄

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