Preparation, properties, and reactions with sulphur dioxide of triphenylphosphine oxide complexes of manganese(<scp>II</scp>) thiocyanate. Crystal structures of [{Mn(OPPh3)2(NCS)(µ-NCS)}2], [Mn(OPPh3)4(NCS)2], and (PPh3O)(PPh3OH)(HSO4), a derivative of sulphuric acid formed under ambient air oxidation of sulphur dioxide

Al-Farhan, Khalid; Beagley, B.; El-Sayrafi, Oraib; Gott, George A.; McAuliffe, Charles A.; Rory, Philomena P. Mac; Pritchard, Robin G.

doi:10.1039/dt9900001243

Cited by 23 publications

(7 citation statements)

References 25 publications

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“…2.206 Å) and Mn–N (av. 2.167 Å) distances are comparable with those of Mn II complexes . In general, bond lengths and angles in the [Mn(NCS) 2 ] unit of 1 are consistent with those found in complexes 2 – 6 and in the related compounds reported earlier , , …”

Section: Resultssupporting

confidence: 88%

“…Moreover, the basicity of thiocyanate anions can also favor the formation of mixed valence Mn II ‐Mn III CP 2 . Note that the terminal [NCS] – anions in compounds 1 – 6 act as N ‐bonded ones that is in the line with HSAB concept and the literature data , , . It is relevant to note also that, apart from the titled bis(phosphine oxides), DPEPhosO 2 and 1,2,4,5‐tetrakis(diphenylphosphinyl)benzene have been tested in the reaction with Mn(NCS) 2 , but no X‐ray quality crystals of products formed have been obtained.…”

Section: Resultssupporting

confidence: 87%

“…In particular, among such Mn II thiocyanate complexes, only four examples were credibly described, viz. [Mn(Ph 3 PO) 2 (NCS)Cl], [(Ph 3 PO) 2 Mn ( SCN NCS )Mn(Ph 3 PO) 2 ], [Mn(Ph 3 PO) 4 (NCS) 2 ] and [Mn 2 (µ‐dpppO 2 ) 4 (NCS) 2 ](NCS) 2 . To the best of our knowledge, luminescence of any Mn thiocyanate complexes was not studied at all.…”

Section: Introductionmentioning

confidence: 99%

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Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength‐Dependent Multicolor Luminescence

et al. 2020

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First examples of luminescent MnII thiocyanate complexes are presented. A series of such compounds has been synthesized via the reaction of Mn(NCS)2 with bis(phosphine oxides), Ph2P(O)–X–(O)PPh2, where X = CH2 (L1), CH2CH2 (L2), CH2CH2CH2 (L3), CH2C(=CH2)CH2 (L4), C(=CH2)C(=CH2) (L5) and C≡C (L6). The L1, L3 and L4 ligands, when reacted with Mn(NCS)2 on air (EtOH/acetone, r.t.), produce chelate complexes [MnII(O^O)2(NCS)2]. Under similar conditions, L5 gives ionic complex [MnII(L5)3][MnII(NCS)4], whereas L6 affords chain coordination polymer (CP) [MnII(L6)2(NCS)2]n. By contrast, ligand L2 results in formation of mixed‐valent chain CP [MnIIMnIII(L2)3(NCS)5]n. Complex [Mn(L4)2(NCS)2] and CP [Mn(L6)2(NCS)2]n display unique dual luminescence, i.e. the intraligand fluorescence (blue band) and MnII‐centered phosphorescence (red band), the ratio of which is largely modulated by excitation wavelength. Through this feature, the luminescence color of these complexes can be smoothly tuned from deep‐blue to red. Complex [Mn(L5)3][Mn(NCS)4] shows MnII‐based phosphorescence only.

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Section: Resultssupporting

confidence: 88%

Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength‐Dependent Multicolor Luminescence

et al. 2020

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“…It should be noted that crystal I is isomorphic to the previously studied crystals of 1 : 2 adducts of sulfuric acid with Ph 3 PO [9] and tetrafluoroboric acid with Ph 3 PO [10]. The structure of the latter is very close to that of I, because it is also isoelectronic to I.…”

Section: Resultsmentioning

confidence: 57%

Synthesis and crystal structure of a 1 : 2 adduct of aquatrifluoroboron and triphenylphosphine oxide

Chekhlov

2005

Russ J Coord Chem

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A crystalline 1 : 2 adduct of aquatrifluoroboron and triphenylphosphine oxide 1/2[ BF 3 ( H 2 O )] · Ph 3 PO ( I ) is synthesized and studied by X-ray diffraction analysis. The crystals are orthorhombic, space group Fdd 2 , a = 32.283 Å , b = 20.162 Å, c = 10.191 Å, Z = 16. The structure is solved by the direct method and refined by a full-matrix least-squares method in the anisotropic approximation to R = 0.054 against 2528 independent reflections (CAD4 automated diffractometer, λ Mo K α ). A Ph 3 PO molecule has a normal structure. A [BF 3 ( H 2 O ) ] molecule is randomly disordered relative to axis 2; populations of positions of all its atoms are 0.5. The boron atom has a distorted tetrahedral coordination with a donor-acceptor B -O ( w ) bond. In crystal, strong hydrogen bonds of the P=O···ç-O-ç···O=P type are formed between the H 2 O molecule and two Ph 3 PO molecules.* Symmetry transforms of atoms: i 1x, -y, z; ii x, y, z + 1; iii x -1/4, 1/4y, 3/4 + z.

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“…Triphenylphosphine oxide (TPPO) is a very useful molecule for hydrogen-bond model studies. Its bulky shape, its confor-mational¯exibility via rotation of the phenyl rings about the PÐC bonds and the electron-density concentration at the phosphoryl O atom make it capable of forming strong, medium and weak hydrogen bonds of different types with various H-atom donors (Al-Farhan et al, 1990;Fuquen & Lechat, 1992;Baures, 1991). The hydrogen bond itself is of major interest in chemistry and biology.…”

Section: Commentmentioning

confidence: 99%

Triphenylphosphine oxide–3-chlorobenzoic acid (1/1)

Al-Farhan

2003

Acta Crystallogr C Cryst Struct Commun

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Cited by 23 publications

References 25 publications

Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength‐Dependent Multicolor Luminescence

Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength‐Dependent Multicolor Luminescence

Synthesis and crystal structure of a 1 : 2 adduct of aquatrifluoroboron and triphenylphosphine oxide

Triphenylphosphine oxide–3-chlorobenzoic acid (1/1)

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