Three Double-Layered {Ni8}@{Bn}2 (n = 3, 4, 6) Cluster Sandwiched Polyoxometalates

Chen Lian; Guo Yu Yang

doi:10.1021/acs.inorgchem.3c03533

Three Double-Layered {Ni₈}@{B_n}₂ (n = 3, 4, 6) Cluster Sandwiched Polyoxometalates

Chen Lian, Guo Yu Yang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

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

6 Citations (Scopus)

Abstract

The reaction of [A-α-GeW₉O₃₄]^10- with Ni²⁺ in the presence of inorganic boron sources yielded three unprecedented sandwiched Ni-added polyoxometalates (NiAPs): K₆Na₇H₇[({Ni₈(μ₆-O)(OH)₂}@{B₃O₆(OH)₃}₂)@(B-α-GeW₉O₃₄)₂]·16H₂O (1), K₄Na₄H₁₂[({Ni₈(μ₆-O)}@{B₄O₈(OH)₃}₂)@(B-α-GeW₉O₃₄)₂]·16H₂O (2), and K₁₀Na₆[({Ni₈(μ₆-O)}@ {B₆O₉(OH)₅}₂)@(B-α-GeW₉O₃₄)₂]·12H₂O (3). The common feature of 1-3 is that a rare double-layered {Ni₈}@{B_n}₂ (n = 3,4,6) cluster is inlaid in their sandwich belts. The {Ni₈} cluster is composed of two cubane {Ni₄} clusters by six bridging oxygen atoms and sharing a μ₆-O atom. The numbers of boron atoms in the {Ni₈}@{B_n}₂ (n = 3,4,6) clusters of 1-3 are different, namely, {Ni₈}@{B₃}₂, {Ni₈}@{B₄}₂, and {Ni₈}@{B₆}₂ clusters. To the best of our knowledge, such architectures containing a double-layered {Ni₈}@{B_n}₂ (n = 3,4,6) cluster in the sandwich belts are the first observed in POM chemistry. Furthermore, 2 was investigated as an efficient heterogeneous catalyst for the Knoevenagel condensation of various aldehydes with malononitrile at room temperature.

Original language	English
Journal	Inorganic Chemistry
DOIs	https://doi.org/10.1021/acs.inorgchem.3c03533
Publication status	Accepted/In press - 2023

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10.1021/acs.inorgchem.3c03533

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@article{87fd465a6b0040879c279c4147e6a7da,

title = "Three Double-Layered {Ni8}@{Bn}2 (n = 3, 4, 6) Cluster Sandwiched Polyoxometalates",

abstract = "The reaction of [A-α-GeW9O34]10- with Ni2+ in the presence of inorganic boron sources yielded three unprecedented sandwiched Ni-added polyoxometalates (NiAPs): K6Na7H7[({Ni8(μ6-O)(OH)2}@{B3O6(OH)3}2)@(B-α-GeW9O34)2]·16H2O (1), K4Na4H12[({Ni8(μ6-O)}@{B4O8(OH)3}2)@(B-α-GeW9O34)2]·16H2O (2), and K10Na6[({Ni8(μ6-O)}@ {B6O9(OH)5}2)@(B-α-GeW9O34)2]·12H2O (3). The common feature of 1-3 is that a rare double-layered {Ni8}@{Bn}2 (n = 3,4,6) cluster is inlaid in their sandwich belts. The {Ni8} cluster is composed of two cubane {Ni4} clusters by six bridging oxygen atoms and sharing a μ6-O atom. The numbers of boron atoms in the {Ni8}@{Bn}2 (n = 3,4,6) clusters of 1-3 are different, namely, {Ni8}@{B3}2, {Ni8}@{B4}2, and {Ni8}@{B6}2 clusters. To the best of our knowledge, such architectures containing a double-layered {Ni8}@{Bn}2 (n = 3,4,6) cluster in the sandwich belts are the first observed in POM chemistry. Furthermore, 2 was investigated as an efficient heterogeneous catalyst for the Knoevenagel condensation of various aldehydes with malononitrile at room temperature.",

author = "Chen Lian and Yang, {Guo Yu}",

note = "Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

year = "2023",

doi = "10.1021/acs.inorgchem.3c03533",

language = "English",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

}

TY - JOUR

T1 - Three Double-Layered {Ni8}@{Bn}2 (n = 3, 4, 6) Cluster Sandwiched Polyoxometalates

AU - Lian, Chen

AU - Yang, Guo Yu

PY - 2023

Y1 - 2023

N2 - The reaction of [A-α-GeW9O34]10- with Ni2+ in the presence of inorganic boron sources yielded three unprecedented sandwiched Ni-added polyoxometalates (NiAPs): K6Na7H7[({Ni8(μ6-O)(OH)2}@{B3O6(OH)3}2)@(B-α-GeW9O34)2]·16H2O (1), K4Na4H12[({Ni8(μ6-O)}@{B4O8(OH)3}2)@(B-α-GeW9O34)2]·16H2O (2), and K10Na6[({Ni8(μ6-O)}@ {B6O9(OH)5}2)@(B-α-GeW9O34)2]·12H2O (3). The common feature of 1-3 is that a rare double-layered {Ni8}@{Bn}2 (n = 3,4,6) cluster is inlaid in their sandwich belts. The {Ni8} cluster is composed of two cubane {Ni4} clusters by six bridging oxygen atoms and sharing a μ6-O atom. The numbers of boron atoms in the {Ni8}@{Bn}2 (n = 3,4,6) clusters of 1-3 are different, namely, {Ni8}@{B3}2, {Ni8}@{B4}2, and {Ni8}@{B6}2 clusters. To the best of our knowledge, such architectures containing a double-layered {Ni8}@{Bn}2 (n = 3,4,6) cluster in the sandwich belts are the first observed in POM chemistry. Furthermore, 2 was investigated as an efficient heterogeneous catalyst for the Knoevenagel condensation of various aldehydes with malononitrile at room temperature.

AB - The reaction of [A-α-GeW9O34]10- with Ni2+ in the presence of inorganic boron sources yielded three unprecedented sandwiched Ni-added polyoxometalates (NiAPs): K6Na7H7[({Ni8(μ6-O)(OH)2}@{B3O6(OH)3}2)@(B-α-GeW9O34)2]·16H2O (1), K4Na4H12[({Ni8(μ6-O)}@{B4O8(OH)3}2)@(B-α-GeW9O34)2]·16H2O (2), and K10Na6[({Ni8(μ6-O)}@ {B6O9(OH)5}2)@(B-α-GeW9O34)2]·12H2O (3). The common feature of 1-3 is that a rare double-layered {Ni8}@{Bn}2 (n = 3,4,6) cluster is inlaid in their sandwich belts. The {Ni8} cluster is composed of two cubane {Ni4} clusters by six bridging oxygen atoms and sharing a μ6-O atom. The numbers of boron atoms in the {Ni8}@{Bn}2 (n = 3,4,6) clusters of 1-3 are different, namely, {Ni8}@{B3}2, {Ni8}@{B4}2, and {Ni8}@{B6}2 clusters. To the best of our knowledge, such architectures containing a double-layered {Ni8}@{Bn}2 (n = 3,4,6) cluster in the sandwich belts are the first observed in POM chemistry. Furthermore, 2 was investigated as an efficient heterogeneous catalyst for the Knoevenagel condensation of various aldehydes with malononitrile at room temperature.

UR - http://www.scopus.com/inward/record.url?scp=85180090888&partnerID=8YFLogxK

U2 - 10.1021/acs.inorgchem.3c03533

DO - 10.1021/acs.inorgchem.3c03533

M3 - Article

C2 - 38048264

AN - SCOPUS:85180090888

SN - 0020-1669

JO - Inorganic Chemistry

JF - Inorganic Chemistry

ER -

Three Double-Layered {Ni₈}@{B_n}₂ (n = 3, 4, 6) Cluster Sandwiched Polyoxometalates

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