Adenine Coordination around a Cu<sub>6</sub>I<sub>6</sub> Core

Prajapati, Rajneesh Kumar; Verma, Sandeep

doi:10.1021/ic200188a

Cited by 38 publications

(10 citation statements)

References 35 publications

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“…X-ray crystallography reveals the presence of 3D network (R3: Fig. 8) using for SBU a not so rare hexagonal prism motif, Cu 6 I 6 [41][42][43][44] but is the only one for bearing S-donors, i.e. Cu 6 I 6 S 6 .…”

Section: Acyclic Ligandsmentioning

confidence: 99%

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

Harvey

Knorr

2016

J Inorg Organomet Polym

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This mini-review surveys 23 structures of 3D coordination polymers built upon mono-, di-as well as cyclic and acylic polythioethers. An emphasis is put on the Secondary Building Units (SBU) and the physical properties. Importantly, the key feature is that the dominant SBU is not the rhomboid (Cu 2 X 2 S 4 ), but an inorganic polymer containing at least the chain of the type (CuX) n . In the latter type of SBU, these chain formations are observed for X = I, but predominantly for X = CN. In addition, a large portion of the surveyed materials exhibit rich photophysical properties, but on several occasions, these materials exhibit properties often attributed to MOFs, mainly solvent exchange.

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Section: Acyclic Ligandsmentioning

confidence: 99%

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

Harvey

Knorr

2016

J Inorg Organomet Polym

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“…Depending on the number of ligands and metal ions, multinuclear and even supramolecular systems can be created . Hence, adenine and its derivatives have been intensely investigated as building blocks for coordination polymers . The rational design of multinuclear metal complexes relies on a combination of suitably oriented metal-to-ligand vectors and preferred coordination environments of the respective metal ions .…”

Section: Introductionmentioning

confidence: 99%

Metal-Mediated Assembly of 1,N⁶-Ethenoadenine: From Surfaces to DNA Duplexes

Mandal¹,

Wang

Prajapati

et al. 2016

Inorg. Chem.

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The design of multinuclear metal complexes requires a match of the ligand-to-metal vectors and the preferred coordination geometries of the metal ions. Only a few ligands are known with a parallel orientation of N→M vectors that brings the metal ions into close proximity. We establish here the adenine derivative 1,N(6)-ethenoadenine (εA) as an ideal bis(monodentate) ligand. Scanning tunneling microscope images of alkylated εA on graphite surface clearly indicate that these ligands bind to Ag(I) ions. The molecular structures of [Ag2(1)2](ClO4)2 and [Ag2(2)2](ClO4)2 (1, 9-ethyl-1,N(6)-ethenoadenine; 2, 9-propyl-1,N(6)-propylenoadenine) confirm that dinuclear complexes with short Ag···Ag distances are formed (3.0256(3) and 2.984(1) Å, respectively). The structural motif can be extended to divalent metal ions, as was shown by determining the molecular structure of [Cu2(1)2(CHO2)2(OH2)2](NO3)2·2H2O with a Cu···Cu distance of 3.162(2) Å. Moreover, when introducing the 1,N(6)-ethenoadenine deoxyribonucleoside into parallel-stranded DNA duplexes, even dinuclear Ag(I)-mediated base pairs are formed, featuring the same transoid orientation of the glycosidic bonds as the model complexes. Hence, 1,N(6)-ethenoadenine and its derivatives are ideally suited as bis(monodentate) ligands with a parallel alignment of the N→M vectors for the construction of supramolecular metal complexes that require two metal ions at close distance.

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“…To date, a great variety of structural types of PL cuprous complexes have been developed, including homoleptic [Cu(NN) 2 ] + complexes, [20] heteroleptic [Cu(NN)P 2 ] + complexes with mono‐ or diphosphine ligands, [7,21–25] mononuclear [CuXNP 2 ] or [CuX(NN)P] complexes with halide ion, [26–30] polynuclear halide‐bridged cuprous polymers or clusters, [31–41] and recently reported neutral complexes with amide and N‐heterocyclic carbene ligands [42–46] . Meanwhile, many works of theoretical calculation and photophysical analysis were also done on these cuprous complexes in order to understand their PL properties better [15,47–51] .…”

Section: Introductionmentioning

confidence: 99%

Heteroleptic cuprous complexes of a diimine MePBO ligand and their structure influence on phosphorescent color: Syntheses, structure characterizations, properties and TD‐DFT calculations

Dai

Song

et al. 2021

Zeitschrift anorg allge chemie

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Three new heteroleptic [Cu(NN)P2]+ type cuprous complexes 1–3 were designed and synthesized by utilizing a diimine ligand 5‐methyl‐2‐(2′‐pyridyl)‐benzoxazole (MePBO) and different phosphine ligands PPh3 (1), m‐Tol3P (2) and POP (3), (PPh3=triphenylphosphine, m‐Tol3P=tris(3‐methylphenyl)phosphine, POP=bis[2‐(diphenylphosphino)phenyl]ether), respectively. All complexes were characterized by single‐crystal X‐ray diffraction, spectroscopic analysis (IR, UV‐Vis), elemental analysis, and photoluminescence study. Single‐crystal X‐ray diffraction revealed that complexes 1–3 all adopt discrete cation complex structure with a tetrahedral CuN2P2 coordination geometry with diverse P−Cu−P angles. Their UV‐Vis absorption spectra exhibit a blue‐shift sequence under the enlarging of P−Cu−P angle from 3 to 2 then to 1. The PL emission peak wavelengths of 1–3 also present similar blue‐shift sequence (3→1/2). Their microsecond PL lifetime indicates that their PL behavior belongs to phosphorescence. TD‐DFT calculation and wavefunction analysis illuminate that the S1 and T1 states of 1–3 should all be assigned as (ML+L′L)CT states. Their UV‐Vis absorption and phosphorescence should be attributed to the charge transfer from the P−Cu−P segment to the MePBO ligand. Therefore, as P−Cu−P angle increases (lower HOMO), the energy of S1 and T1 states also increase, following the change of PL color. Additionally, the steric hindrance from substituents of phosphine ligand, as well as extra strong intra‐molecular π−π stacking interactions should effectively inhibit nonradiative decay so that an abnormal PL emission blue‐shift is observed from 1 to 2.

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Adenine Coordination around a Cu₆I₆ Core

Cited by 38 publications

References 35 publications

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

Metal-Mediated Assembly of 1,N⁶-Ethenoadenine: From Surfaces to DNA Duplexes

Heteroleptic cuprous complexes of a diimine MePBO ligand and their structure influence on phosphorescent color: Syntheses, structure characterizations, properties and TD‐DFT calculations

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Adenine Coordination around a Cu6I6 Core

Cited by 38 publications

References 35 publications

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

Designs of 3-Dimensional Networks and MOFs Using Mono- and Polymetallic Copper(I) Secondary Building Units and Mono- and Polythioethers: Materials Based on the Cu–S Coordination Bond

Metal-Mediated Assembly of 1,N6-Ethenoadenine: From Surfaces to DNA Duplexes

Heteroleptic cuprous complexes of a diimine MePBO ligand and their structure influence on phosphorescent color: Syntheses, structure characterizations, properties and TD‐DFT calculations

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Adenine Coordination around a Cu₆I₆ Core

Metal-Mediated Assembly of 1,N⁶-Ethenoadenine: From Surfaces to DNA Duplexes