Flash Communication: Mild Synthesis of [Fe(CN)4(L−L)]2–Complexes from trans-[Fe(CN)4(DMSO)2]2–

Paul J. Griffin; Stephen A. Koch; Quinton J. Bruch

doi:10.1021/acs.organomet.5c00422

Flash Communication: Mild Synthesis of [Fe(CN)₄(L−L)]^2–Complexes from trans-[Fe(CN)₄(DMSO)₂]^2–

Paul J. Griffin
, Stephen A. Koch
, Quinton J. Bruch

Chemistry

Stony Brook University

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

Abstract

Herein we report the facile synthesis of [Na]₂[Fe(CN)₄(phen)] and [Na]₂[Fe(CN)₄(bpy)] from a single isolable trans-[Na]₂[Fe(CN)₄(DMSO)₂] precursor under mild conditions that avoid the generation of highly toxic HCN gas. Furthermore, we demonstrate the generality of this approach by synthesizing [Na]₂[Fe(CN)₄(MeBIM-py)] (MeBIM-py = 3-methyl-1-(pyridin-2-yl)-1H-benzo[d]imidazol-2-ylidene), the first example of a carbene iron tetracyanide complex. Spectroscopic characterization of the products via NMR and IR spectroscopies as well as single crystal X-ray diffraction confirm the synthesis of the known diimine complexes and provides insight into the influence of including a strongly donating N-heterocyclic carbene ligand on the Fe–CN bond.

Original language	English
Pages (from-to)	2733-2736
Number of pages	4
Journal	Organometallics
Volume	44
Issue number	23
DOIs	https://doi.org/10.1021/acs.organomet.5c00422
State	Published - Dec 8 2025

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title = "Flash Communication: Mild Synthesis of [Fe(CN)4(L−L)]2–Complexes from trans-[Fe(CN)4(DMSO)2]2–",

abstract = "Herein we report the facile synthesis of [Na]2[Fe(CN)4(phen)] and [Na]2[Fe(CN)4(bpy)] from a single isolable trans-[Na]2[Fe(CN)4(DMSO)2] precursor under mild conditions that avoid the generation of highly toxic HCN gas. Furthermore, we demonstrate the generality of this approach by synthesizing [Na]2[Fe(CN)4(MeBIM-py)] (MeBIM-py = 3-methyl-1-(pyridin-2-yl)-1H-benzo[d]imidazol-2-ylidene), the first example of a carbene iron tetracyanide complex. Spectroscopic characterization of the products via NMR and IR spectroscopies as well as single crystal X-ray diffraction confirm the synthesis of the known diimine complexes and provides insight into the influence of including a strongly donating N-heterocyclic carbene ligand on the Fe–CN bond.",

author = "Griffin, \{Paul J.\} and Koch, \{Stephen A.\} and Bruch, \{Quinton J.\}",

note = "Publisher Copyright: {\textcopyright} 2025 The Authors. Published by American Chemical Society",

year = "2025",

month = dec,

day = "8",

doi = "10.1021/acs.organomet.5c00422",

language = "English",

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journal = "Organometallics",

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T1 - Flash Communication

T2 - Mild Synthesis of [Fe(CN)4(L−L)]2–Complexes from trans-[Fe(CN)4(DMSO)2]2–

AU - Griffin, Paul J.

AU - Koch, Stephen A.

AU - Bruch, Quinton J.

PY - 2025/12/8

Y1 - 2025/12/8

N2 - Herein we report the facile synthesis of [Na]2[Fe(CN)4(phen)] and [Na]2[Fe(CN)4(bpy)] from a single isolable trans-[Na]2[Fe(CN)4(DMSO)2] precursor under mild conditions that avoid the generation of highly toxic HCN gas. Furthermore, we demonstrate the generality of this approach by synthesizing [Na]2[Fe(CN)4(MeBIM-py)] (MeBIM-py = 3-methyl-1-(pyridin-2-yl)-1H-benzo[d]imidazol-2-ylidene), the first example of a carbene iron tetracyanide complex. Spectroscopic characterization of the products via NMR and IR spectroscopies as well as single crystal X-ray diffraction confirm the synthesis of the known diimine complexes and provides insight into the influence of including a strongly donating N-heterocyclic carbene ligand on the Fe–CN bond.

AB - Herein we report the facile synthesis of [Na]2[Fe(CN)4(phen)] and [Na]2[Fe(CN)4(bpy)] from a single isolable trans-[Na]2[Fe(CN)4(DMSO)2] precursor under mild conditions that avoid the generation of highly toxic HCN gas. Furthermore, we demonstrate the generality of this approach by synthesizing [Na]2[Fe(CN)4(MeBIM-py)] (MeBIM-py = 3-methyl-1-(pyridin-2-yl)-1H-benzo[d]imidazol-2-ylidene), the first example of a carbene iron tetracyanide complex. Spectroscopic characterization of the products via NMR and IR spectroscopies as well as single crystal X-ray diffraction confirm the synthesis of the known diimine complexes and provides insight into the influence of including a strongly donating N-heterocyclic carbene ligand on the Fe–CN bond.

UR - https://www.scopus.com/pages/publications/105024755724

U2 - 10.1021/acs.organomet.5c00422

DO - 10.1021/acs.organomet.5c00422

M3 - Article

AN - SCOPUS:105024755724

SN - 0276-7333

VL - 44

SP - 2733

EP - 2736

JO - Organometallics

JF - Organometallics

IS - 23

ER -

Flash Communication: Mild Synthesis of [Fe(CN)₄(L−L)]^2–Complexes from trans-[Fe(CN)₄(DMSO)₂]^2–

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