10.1021/ic4029386.s004
Daopeng Zhang
Daopeng
Zhang
Weijiang Si
Weijiang
Si
Ping Wang
Ping
Wang
Xia Chen
Xia
Chen
Jianzhuang Jiang
Jianzhuang
Jiang
1D to 3D Heterobimetallic Complexes Tuned by Cyanide
Precursors: Synthesis, Crystal Structures, and Magnetic Properties
American Chemical Society
2014
Seiden model
6.0 K
TN
3 D Heterobimetallic Complexes Tuned
cyanide group
Ni
Magnetic PropertiesFive
Hamiltonian H
complexes exhibit
cyanide groups
Crystal Structures
Fe
4.0 K
cyanidometalate precursors
1 D
heterobimetallic complexes
TC
Cyanide Precursors
phase transition temperature
2014-04-07 00:00:00
Dataset
https://acs.figshare.com/articles/dataset/1D_to_3D_Heterobimetallic_Complexes_Tuned_by_Cyanide_Precursors_Synthesis_Crystal_Structures_and_Magnetic_Properties/2308354
Five
new heterobimetallic complexes, namely, {[Ni(L)][Fe(bpb)(CN)<sub>2</sub>]}ClO<sub>4</sub> (L = 2,12-dimethyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene,
bpb<sup>2–</sup> = 1,2-bis(pyridine-2-carboxamido)benzenate)
(<b>1</b>), {[Ni(L)]<sub>3</sub>[M(CN)<sub>6</sub>]<sub>2</sub>}·7H<sub>2</sub>O (M = Fe (<b>2</b>), Cr (<b>3</b>)), {[Ni(L)]<sub>2</sub>[Mo(CN)<sub>8</sub>]}·CH<sub>3</sub>CN·13H<sub>2</sub>O (<b>4</b>), and {[Ni(L)]<sub>2</sub>[W(CN)<sub>8</sub>]}·16H<sub>2</sub>O (<b>5</b>), were
assembled from the polyaza macrocycle nickel(II) compound and five
cyanidometalate precursors containing different numbers of cyanide
groups. Single-crystal X-ray diffraction analysis reveals their different
structure ranging from a cyanide-bridged cationic polymeric single
chain for <b>1</b>, a two-dimensional network for <b>2</b> and <b>3</b>, and a three-dimensional network for <b>4</b> and <b>5</b>. In addition, a systematic investigation over
the magnetic properties of <b>1</b>–<b>3</b> indicates
the ferromagnetic magnetic coupling between neighboring Fe(III)/Cr(III)
and Ni(II) ions through the bridging cyanide group. For complex <b>1</b>, the magnetic susceptibility has been simulated by the Seiden
model using the Hamiltonian <i>H</i> = <i>–J</i>∑<sub><i>i=</i>0</sub><sup><i>N</i></sup><i>S</i><sub><i>i</i></sub><i>S</i><sub><i>i+</i>1</sub>, leading to the magnetic coupling
constant of <i>J</i> = 3.67 cm<sup>–1</sup>. The
two-dimensional magnetic complexes exhibit three-dimensional magnetic
ordering behavior with a magnetic phase transition temperature of <i>T</i><sub>C</sub> = 4.0 K for <b>2</b> and <i>T</i><sub>N</sub> = 6.0 K for <b>3</b>, respectively.